The discriminant D is positive and ∂²f/∂x² is positive, there is a local minimum at the critical point (4, 3). The value of the discriminant D at this point is 4.
To answer your question regarding the function f(x, y) = x² + y² - 8x - 6y + 1:
To find the critical points of f in R², we need to calculate the partial derivatives with respect to x and y, and then set them equal to zero:
∂f/∂x = 2x - 8
∂f/∂y = 2y - 6
Set the partial derivatives equal to zero and solve for x and y:
2x - 8 = 0 => x = 4
2y - 6 = 0 => y = 3
So, f has one critical point at (4, 3) in R².
To determine if the critical point is a local minimum, we need to find the value of the discriminant D at that point. We'll use the second partial derivative test:
∂²f/∂x² = 2 (second partial derivative with respect to x)
∂²f/∂y² = 2 (second partial derivative with respect to y)
∂²f/∂x∂y = 0 (mixed partial derivative)
Now, calculate the discriminant D:
D = (∂²f/∂x²)(∂²f/∂y²) - (∂²f/∂x∂y)² = (2)(2) - (0)² = 4
Since the discriminant D is positive and ∂²f/∂x² is positive, there is a local minimum at the critical point (4, 3). The value of the discriminant D at this point is 4.
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What’s the answer to this question
The recursive formula of the arithmetic sequence is:
xₙ = n*4 + 13
With that we can see that x₁₁ = 57
How to write the arithmetic sequence?Here we know that the first elements of the sequence are:
17, 21, 25, 29, ...
To find the common difference, d, we take the difference between any two consecutive elements, so we have:
c = 21 - 17 = 4
Then the recursive formula for the n-th term is:
xₙ = n*4 + d
The first element x₁ is 17, so we will have:
17 = 1*4 + d
17 - 4 = d = 13
The recursive formula is:
xₙ = n*4 + 13
b) the eleventh term of the sequence is given by replacing n in the above formula by 11.
x₁₁ = 4*11 + 13 = 44 + 13 = 57
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does anyone know this?
Answer:
[-10, 3]
Step-by-step explanation:
Hello!
To find the range of a graph you look at the lowest point and the highest point
The highest point is 3
The lowest point is -10
The range is [-10, 3]
Hope this helps!
Answer:
-10, 3
Step-by-step explanation:
high: 3
low: -10
the order of the 2 coordinates goes left or right, then up or down
( plz mark me as brainliest, that would be most appreciated! )
the paired values of the consumer price index (cpi) and the cost of a slic of pizza are listed in the table. assume a 0.01 significance level. determine the correlation coefficient and find the critical values.
r = 0.985; critical values = ±0.917
r = 0.985; critical values = ±0.811
r = 0.872; critical values = ±0.811
r = 0.872; critical values = ±0.917
The correct option regarding the correlation coefficient and the critical values for the the paired values of the consumer price index (cpi) and the cost of a slice of pizza is given as follows:
r = 0.985; critical values = ±0.917.
How to obtain the correlation coefficient and the critical value?The correlation coefficient for a data-set is obtained inserting the points of the data-set into a correlation coefficient calculator.
For this problem, the points are given as follows:
(30.2, 0.15), (48.3, 0.35), (112.3, 1), (162.2, 1.25), (191.9, 1.75), (197.8, 2.00).
Inserting these points into a calculator, the numeric value of the coefficient is given as follows:
r = 0.9852.
Then the critical value is also used a calculator for the r-distribution, with these following parameters:
r = 0.9852.Sample size of 6.Using the calculator, the critical value is of:
r = ±0.917.
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Annie needs $30 to buy a coat she has saved $12 and plans to work as a baby siter to earn $6 per hour which inequality shows the minimum number of hours, n, that annie should work as a babysitter to earn enough to buy a coat?
a 12 + 6n ≤ 30, so n ≤ 3
b 12 + 6n ≥ 30, so n ≤ 3
c 6n ≥30 + 12, so n ≥ 7
d 6n ≤30 + 12, so n ≤ 7
Answer:
The answer would be B. 12 + 6n is greater than or equal to 30, so n is less than or equal to 3.
explanation:
I'm bad with explaining things, but I'll try my best to explain why this is the right answer.
12 + 6n ≥ 30, so n ≤ 3
let's start with the 12 at the beginning of the inequality, Annie already has $12, so the 12 in the inequality shows the amount of money she already has being added to the $6 per hour of babysitting she needs to do (n).
Now for the + 6n, the plus is there to show that the $12 Annie already has is being added to the 6n. The 6n then represents the $6 Annie makes each hour and the n represents how many hours she needs to babysit in order to get $30. The 6 is being multiplied by the amount of hours she needs to babysit to show how much money Annie would make. Then you add on the $12 she already has.
Annie then needs at least $30, but if she makes more than $30 then she will simply have more money than needed, therefore you use the greater than or equal to sign to show that she can have more money than just $30 after working.
I hope this helps, and sorry if my explanation is hard to understand lol.
e + 20 ≥ 33
Please help me solve this!
( solving one-step inequalities )
Answer:
=> e is greater than Or equal to 13
Answer:
Hey I don't know if this helps but I your trying to see if the equality is true of false it would be false
HELP PLZ I’m struggling with this
Answer:
270 per year so 6 years is 1620 and add that with 6000=7620
Kari has a mass of thirty-eight and
ninety-seven hundredths kilograms.
What is her mass in standard form?
Answer:
38.97 kilograms
Step-by-step explanation:
38 ones and 97 hundredths
38 0.97
38.97
A study investigated about 3000 meals ordered from Chipotle restaurants using the online site Grubhub. Researchers calculated
the sodium content (in milligrams) for each order based on Chipotle's published nutrition information. The distribution of
sodium content is approximately normal with mean 2000 mg and standard deviation 500 mg.
(a) What proportion of the meals ordered exceeded the recommended daily allowance of 2400 mg of sodium?
Round your answer to 4 decimal places.
I got 21.18, and then tried 21.19 and both were incorrect.
The proportion of the meals ordered that exceeded the recommended daily allowance of 2400 mg of sodium is 0.2119.
How to calculate the proportion?z = (x-μ)/σ,
where
x is the raw score = 2400mg
μ is the population mean = 2000mg
σ is the population standard deviation = 500mg
z = 2400 - 2000/500
z = 0.8
Probability value from Z-Table:
P(x<2400) = 0.78814
P(x>2400) = 1 - P(x<2400) = 0.21186
Converting to percentage:
0.21186 × 100
= 21.186%
= 0.2119
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A deli receives a large order for sandwiches for a company picnic. The company wants one club sandwich and two regular sandwiches for each person. The company also wants an extra Dagwood sandwich. A club sandwich has $3$ slices of bread. A regular sandwich has $2$ slices. A Dagwood has $5$ slices. If there are $n$ people going to the company picnic, how many slices of bread does the deli need to make this order
Deli needs 7n + 5 slices of bread to make this order.
Given:
Bread slices required for club sandwich = 3Bread slices required for regular sandwich = 2Bread slices required for Dagwood sandwich = 5Thus, total number of bread slices required for n people = n(3 + 2 + 2) + 5 (if only 1 Dagwood sandwich is required) = 7n + 5.
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Determine the equation of the graph and select the correct answer below.
(1, 1-3)
Courtesy of Texas Instruments
Answer:
y = (x -1)² -3
Step-by-step explanation:
A quadratic with a vertex at (h, k) will have an equation of the form ...
y = a(x -h)² +k
You have (h, k) = (1, -3), and a vertical scale factor* of 1. So, the equation of the graphed curve is ...
y = (x -1)² -3
_____
* One way to determine the value of "a" in the form shown is to look at the vertical difference between the vertex and the points 1 unit right or left of the vertex. Here, those points are 1 unit above the vertex, so the vertical scale factor "a" is 1.
Finel ∂z/∂x and ∂z/∂y is definetly implicity as a function or x and y by the equation x3+y3+z3+6xyz=1
the partial derivatives ∂z/∂x and ∂z/∂y, as implicit functions of x and y by the given equation, are ∂z/∂x = -2xy - 3x^2z / (3z^2 + 6xy) and ∂z/∂y = -2yx - 3y^2z / (3z^2 + 6xy), respectively.
To find the partial derivatives ∂z/∂x and ∂z/∂y as functions of x and y, we use implicit differentiation. Differentiating the equation x^3 + y^3 + z^3 + 6xyz = 1 with respect to x, we obtain:
\(3x^2 + 6yz + 3z^2(dz/dx) + 6xy(dz/dx) = 0.\)
Rearranging terms, we have:
\((3z^2 + 6xy) (dz/dx) = -3x^2 - 6yz.\)
Dividing both sides by (3z^2 + 6xy), we find:
dz/dx = (-3x^2 - 6yz) / (3z^2 + 6xy).
Similarly, differentiating the equation with respect to y, we get:
(3z^2 + 6xy) (dz/dy) = -3y^2 - 6xz,which gives us:
dz/dy = (-3y^2 - 6xz) / (3z^2 + 6xy).
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Use a unit circle. What is each inverse function value in degrees?
b. sin⁻¹ (1/2)
The inverse function value of sin⁻¹ (1/2) is 30 degrees and 150 degrees. The first quadrant, the angle is 30 degrees (π/6 radians) and in the second quadrant, the angle is 150 degrees (5π/6 radians).
To find the inverse function value in degrees for sin⁻¹ (1/2), we can use the unit circle.
In the unit circle, the y-coordinate represents the sine value of an angle.
So, we need to find the angle whose y-coordinate is 1/2.
On the unit circle, the sine function is positive in the first and second quadrants.
In the first quadrant, the angle is 30 degrees (π/6 radians) and in the second quadrant, the angle is 150 degrees (5π/6 radians).
Therefore, the inverse function value of sin⁻¹ (1/2) is 30 degrees and 150 degrees.
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what values are specified by the null hypothesis for the chi-square test for goodness of fit? a. proportions for the entire population. b. proportions for the sample. c. frequencies for the entire population. d. frequencies for the sample.
The null hypothesis in a chi-square test for goodness of fit involves frequencies for the entire population, not just proportions or frequencies for the sample. c.
In a chi-square test for goodness of fit, the null hypothesis specifies the expected frequencies or counts for different categories in the entire population being studied.
The test compares the observed frequencies in the sample to the expected frequencies under the null hypothesis to determine if there is a significant difference between the observed and expected distributions.
The chi-square test for goodness of fit assesses whether the observed frequencies in the sample deviate significantly from the expected frequencies specified by the null hypothesis for the entire population. The test evaluates if the observed data supports or contradicts the null hypothesis, which assumes that the observed frequencies follow a specific distribution or proportions.
The null hypothesis in a chi-square test for goodness of fit defines the predicted frequencies or counts for various categories in the total population under investigation.
The test determines if there is a significant discrepancy between the observed and predicted distributions by comparing the observed frequencies in the sample to the anticipated frequencies under the null hypothesis.
The chi-square test for goodness of fit determines if the sample's observed frequencies differ noticeably from the null hypotheses' predicted frequencies for the overall population.
The null hypothesis, which holds that the observed frequencies follow a particular distribution or proportions, is assumed in the test, and it is determined if the observed data supports or refutes it.
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What is the range of the function graphed below?
Answer:
(-∞, 2)Step-by-step explanation:
As we see on the graph, the range is:
(-∞, 2) ory < 2Question 19
You are installing new carpeting in a family room. The room is rectangular with dimensions 20 1/2feet × 13 1/8feet . You intend to install baseboards around the entire perimeter of the room except for a 3 1/2 -foot opening into the kitchen. How many linear feet of board must you purchase?
The linear feet of the board that must be purchased is the perimeter of the family room minus the length of the opening into the kitchen.
To find the perimeter of the family room, we add up the lengths of all four sides. Using the given dimensions, we have:
Perimeter = 2(length + width)
= 2(20 1/2 ft + 13 1/8 ft)
= 2(33 5/8 ft)
= 67 1/4 ft
However, we must subtract the length of the opening into the kitchen, which is 3 1/2 feet. Therefore, the total linear feet of the board that must be purchased are:
67 1/4 ft - 3 1/2 ft = 63 3/4 ft
So, we need to purchase 63 3/4 feet of baseboard to install around the entire perimeter of the family room, except for the opening into the kitchen.
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classify the quadric surface. 16x2 − y2 + 16z2 = 4
The given equation, 16x² - y² + 16z² = 4, represents a quadric surface known as an elliptic paraboloid.
To determine the classification, we can examine the coefficients of the squared terms. In this case, the coefficients of x², y², and z² are positive, indicating that the surface is bowl-shaped. Additionally, the signs of the coefficients are the same for x² and z², indicating that the bowl opens upward along the x and z directions.
The negative coefficient of y², on the other hand, means that the surface opens downward along the y direction. This creates a cross-section in the shape of an elliptical parabola.
Considering these characteristics, the given equation represents an elliptic paraboloid.
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If \( P(B)=0.2, P(A \mid B)=0.9, P\left(B^{\prime}\right)=0.8 \), and \( P\left(A \mid B^{\prime}\right)=0.5 \), find \( P(B \mid A) \). \( P(B \mid A)= \) (Round to three decimal places as needed.)
P(B∣A) is approximately 0.310, rounded to three decimal places.
To find the probability P(B∣A), we can use Bayes' theorem:
P(B∣A)= P(A) / P(A∣B)⋅P(B)
Given information:
P(B)=0.2
P(A∣B)=0.9
P(B')=0.8 (probability of not B)
P(A∣B′)=0.5 (probability of A given not B)
First, we need to calculate
P(A), the probability of event A. We can use the law of total probability to express P(A) in terms of the probabilities related to B and not B:
P(A)=P(A∣B)⋅P(B)+P(A∣B′)⋅P(B′)
Substituting the given values:
P(A)=0.9⋅0.2+0.5⋅0.8=0.18+0.4=0.58
Now, we can substitute the known values into Bayes' theorem:
P(B∣A)= P(A)/ P(A∣B)⋅P(B)
= 0. 9.0.2 / 0.58
Calculating this expression:
P(B∣A)≈ 0.5 80.18 ≈0.310
Therefore, P(B∣A) is approximately 0.310, rounded to three decimal places.
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for a function y= x^3-3x+2 with graph (c). Find m knowing the line d: mx+3 intersects the graph at 2 distinct points with coordinates greater than 3.
To satisfy the condition of the line d intersecting the graph at two distinct points with coordinates greater than 3, we can choose any nonzero value for m.
To find the value of m for the line d: mx + 3 that intersects the graph of the function\(y = x^3 - 3x + 2\) at two distinct points with coordinates greater than 3, we need to analyze the behavior of the function and the line.
The graph of the function\(y = x^3 - 3x + 2\) is a cubic curve.
By observing the shape of the graph, we can see that it has two local minima and one local maximum.
Since we are looking for two distinct points of intersection with coordinates greater than 3, we need to find the slope of the line d such that it intersects the function at these points.
To determine the slope of the line d, we need to find the derivative of the function\(y = x^3 - 3x + 2.\)
Taking the derivative, we get \(y' = 3x^2 - 3.\)
Since the line d intersects the graph at two distinct points, it must be a secant line rather than a tangent line.
This means that the slope of the line should be different from the slope of the tangent line at any point on the curve.
To find the slopes of the tangent lines, we set y' = 0 and solve for \(x: 3x^2 - 3 = 0.\)
Simplifying, we find \(x^2 - 1 = 0,\) which gives us x = ±1.
Therefore, the tangent lines at x = -1 and x = 1 have slopes of \(3(-1)^2 - 3 = 0\) and \(3(1)^2 - 3 = 0,\) respectively.
To find the slope of the line d that intersects the graph at two distinct points with coordinates greater than 3, we need a slope that is different from 0.
Thus, we can choose any value of m ≠ 0.
In summary, to satisfy the condition of the line d intersecting the graph at two distinct points with coordinates greater than 3, we can choose any nonzero value for m.
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16. an employee has a weekly income of $358.94 and is assigned claim code 1. calculate her total deductions and taxes. (in your work, list all the deductions, federal and provincial income tax, ei premiums and cpp and how much). (british columbia)
The total deductions and taxes are: $53.84 + $18.16 + $18.31 + $5.67 = $96.98
As an employee, with a weekly income of $358.94 and assigned to claim code 1 in British Columbia, the total deductions and taxes are:
Federal income tax (15%) = $53.84
Provincial income tax (5.06%) = $18.16CPP (5.1%) = $18.31EI (1.58%) = $5.67The total deductions and taxes = $96.98Explanation:In British Columbia, the federal and provincial tax rate is calculated by adding the two tax percentages together. For example, if the federal tax rate is 15% and the provincial tax rate is 5.06%, the total tax rate is 20.06%.
To calculate the federal income tax, multiply the total income by the federal tax rate: 358.94 x 0.15 = $53.84
To calculate the provincial income tax, multiply the total income by the provincial tax rate: 358.94 x 0.0506 = $18.16To calculate CPP, multiply the total income by the CPP percentage rate: 358.94 x 0.051 = $18.31
To calculate EI, multiply the total income by the EI percentage rate: 358.94 x 0.0158 = $5.67
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us
Follow the steps in purple to evaluate:
$+(-)
To add or subtract fractions, their denominators
must be the same. In this problem, we can get a
common denominator by multiplying the second
fraction by 3/3.
3 ?]
3
(-ſ).
-
What number belongs in the green box?
1. the expected value of a random variable can be thought of as a long run average.'
Yes it is correct that the expected value of a random variable can be interpreted as a long-run average.
The expected value of a random variable is a concept used in probability theory and statistics. It is a way to summarize the average behavior or central tendency of the random variable.
To understand why the expected value represents the average value that the random variable would take in the long run, consider a simple example. Let's say we have a fair six-sided die, and we want to find the expected value of the outcomes when rolling the die.
The possible outcomes when rolling the die are numbers from 1 to 6, each with a probability of 1/6. The expected value is calculated by multiplying each outcome by its corresponding probability and summing them up.
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3/6 X 2/4?
A. 6/24
B. 18/8
C. 8/18
(question already asked)
The measure of angle is the greatest of the angles in the triangle. The correct option is c. m ∠Q is the greatest of the interior angles
Determining the greatest or least angle in a triangleFrom the question, we are to determine the statement that is true about triangle PQR
From the given information,
"The perimeter of ΔPQR is 150 centimeters"
PQ = 54 centimeters
PR = 68 centimeters
First, we will determine the length of side QR
QR = 150 cm - (54 cm + 68 cm)
QR = 150 cm - 122 cm
QR = 28 cm
Now,
In a triangle, the angle facing the longest side is the largest angle and the angle facing the shortest side is the smallest angle.
Thus,
In ΔPQR
The angle facing side PR is angle Q
and
The angle facing side QR is angle P
Since PR is the longest side, angle Q is the greatest angle
and
Since QR is the shortest side, angle P is the smallest angle
Hence, m ∠Q is the greatest angle in the triangle.
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What is 86 Inches in Feet?
86 inches are equivalent to 7.17 feet
To convert inches to feet, you can divide the number of inches by 12 (since there are 12 inches in a foot):
86 inches ÷ 12 inches/foot = 7.17 feet
The units of measurement used to measure length or distance are inches and feet. One inch is equivalent to one-twelfth of a foot, while one foot is equal to twelve inches. As a result, you may easily convert feet to inches by multiplying the number of feet by 12. 36 inches, for instance, is equivalent to 3 feet (3 feet x 12 inches/foot).
Divide the number of inches by 12 to convert the measurement to feet. As an illustration, 24 inches (12 inches per foot) equals 2 feet.
Inches and feet are often used to measure an object's height, breadth, and length in the United States.
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It was hot and humid and i felt sticky as honey!
which type of figurative language does the author use in this sentence?
The author employs a simile in the sentence to vividly convey the feeling of stickiness by comparing it to honey, ultimately enhancing the reader's understanding and sensory engagement with the text.
In the sentence "It was hot and humid, and I felt sticky as honey," the author employs a simile as a form of figurative language.
Figurative language is a literary device used to enhance writing and create vivid imagery by going beyond literal meanings.
A simile is a specific type of figurative language that compares two different things using the words "like" or "as."
It allows the reader to form a connection between two seemingly unrelated concepts or experiences.
In this sentence, the author uses a simile to describe the feeling of stickiness.
By comparing the stickiness to honey, the author intends to evoke a sensory experience in the reader's mind.
Honey is known for its thick and viscous texture, and by likening the stickiness to honey, the author effectively conveys the intensity and unpleasantness of the sensation.
Furthermore, the simile also helps to establish the atmosphere and mood of the scene.
By mentioning that it was hot and humid, the author creates an environment where stickiness is expected.
The simile adds depth to the description, allowing the reader to feel the discomfort and understand the impact of the heat and humidity on the author's experience.
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calculate the required equity funding in an lbo acquisition of blurasberries inc.
To calculate the required equity funding in a Leveraged Buyout (LBO) acquisition of Blurasberries Inc., you would need specific financial information and details about the transaction. The equity funding is typically a portion of the total purchase price that the acquiring entity (the private equity firm or investor) must contribute in cash to acquire the target company.
Here are the general steps to calculate the required equity funding:
1. Determine the total purchase price: This includes the enterprise value of the target company, which is usually based on factors such as its financial performance, market position, growth prospects, and comparable transactions in the industry.
2. Assess the capital structure: Determine the desired capital structure for the acquisition, which includes the proportion of debt and equity funding. The debt component is typically raised through bank loans or bonds, while the equity component is the cash contribution from the acquiring entity.
3. Calculate the debt portion: Based on the desired capital structure, estimate the amount of debt financing required for the LBO. This can involve analyzing the target company's cash flows, assets, and debt capacity, as well as negotiating with lenders.
4. Determine the equity portion: The equity funding is the remaining portion of the total purchase price after subtracting the debt financing. It represents the cash contribution from the acquiring entity or the private equity firm. This amount will depend on factors such as the leverage ratio, return expectations, and investor preferences.
It's important to note that the calculation of the required equity funding in an LBO acquisition can be complex and involve various financial considerations. It's advisable to work with financial professionals, investment bankers, or valuation experts who can assist in conducting a thorough analysis and provide accurate estimates based on the specific details of the transaction.
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Combine the like terms to create an equivalent expression for −n+(−4)−(−4n)+6
Answer:
3n + 2
Step-by-step explanation:
−n+(−4)−(−4n)+6
-n - 4 + 4n + 6
3n + 2
A random sample of 100 people was taken. eighty-five of the people in the sample favored candidate a. we are interested in determining whether or not the proportion of the population in favor of candidate a is significantly more than 80%. the test statistic is?
Answer:
Step-by-step explanation:
Sorry if this is different, but based on what I read, here is the answer.
100 x 0.85 = 85
therefor it is 85%, which is significantly more than 80%
Help please
Solve the equation:
2x + 6-12 = 26
Answer:
x=16
Step-by-step explanation:
2x+6-12=262x-6=262x=26+62x=32, divide both sides by 2x=16Answer:
x = 16Step-by-step explanation:
Solve the equation:
2x + 6-12 = 26
2x = 26 - 6 + 12
2x = 20 + 12
2x = 32
x = 32 : 2
x = 16
--------------------------------
check
2 * 16 + 6 - 12 = 26
32 + 6 - 12 = 26
38 - 12 = 26
26 = 26
the answer is good
ACT 1
1. After watching the video, what is the first question that comes to mind?