Analyzing Graphs — Cumulative exam Answers

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A new coffee shop can hold no more than 50 seats. The owner wants at least 20 of the seats to be stools and the remaining seats to be recliners. If x is the number of stools and y is the number of recliners, which graph represents the solution to the system of inequalities? x + y ≤ 50x ≥ 20

A
Option
B
Option
C
Option
D
Option
2
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The perimeter of a rectangular pool is more than 62 meters, and the width is at least 10 meters less than the length. Which system of inequalities represents the possible length in meters, l, and the possible width in meters, w, of the pool?

A
w ≤ 10 – l2l + 2w ≥ 62
B
w ≤ 10 – l2l + 2w > 62
C
w ≤ l – 102l + 2w ≥ 62
D
w ≤ l – 102l + 2w > 62
3

Which expression is a difference of squares with a factor of 5x − 8?

A
25x2 − 16
B
25x2 + 16
C
25x2 − 64
D
25x2 + 64
4

The crew of a garbage truck takes 5 hours to empty all the bins in one neighborhood on pickup day. The city assigned a second garbage truck to this neighborhood. During their training, it took the crew from the second truck 8 hours to empty all the bins.

Question illustration
A
0.6
B
0.5
C
0.7
D
0.4
5

Is the rate of change of the function 5?

Question illustration
A
Yes, because y changes by 5 every time x changes by 1.
B
Yes, because y changes by 1 every time x changes by 5.
C
No, because y does not change by 5 every time x changes by 1.
D
No, because y does not change by 1 every time x changes by 5.
6

Solve the radical equation. Which solution is extraneous?

Question illustration
A
The solution x=-1 is an extraneous solution.
B
Both x=-1 are x=-7 true solutions.
C
The solution x=-7 is an extraneous solution.
D
Neither x=-1 nor x=-7 is a true solution to the equation.
8

What is the solution to the equation ?

Question illustration
A
p =
Option A
B
p =
Option B
C
p = 24
D
p = 40
9

Marlena created a table of values representing the height in feet, h(t), of a coconut falling to the hard ground with a height of 0 feet, collected over t seconds. Assume the coconut does not bounce and rests on the ground when it lands.

Question illustration
A
The initial height of the coconut is 190 feet.
B
The coconut will hit the ground between 4 and 5 seconds after it was dropped.
C
The values of h(t) when t = 4 and 5 should be 0.
D
The maximum height of the coconut was 1 second after it was dropped.
10

A 2-column table with 8 rows. The first column is labeled t with entries negative 4, negative 3, negative 2, negative 1, 0, 1, 2, 3. The second column is labeled f of x with entries negative 54, negative 20, negative 4, 0, negative 2, negative 4, 0, 16.

Question illustration
A
(–4, 1)
B
(–4, –1)
C
(–1,1)
D
(–1, 2)
11

The inverse of the function f(x) = is shown. h(x) = 2x-What is the missing value?

Question illustration
A
1
B
5
C
10
D
20
12

The tile along the edge of a triangular community pool needs to be replaced.

Question illustration
A
12x2 + 15
B
20x2 + 25
C
12x2 + 8x + 25
D
24x2 + 16x + 50
13

Which linear function represents the line given by the point-slope equation y – 2 = 4(x – 3)?

A
f(x) = 6x – 1
B
f(x) = 8x – 6
C
f(x) = 4x – 14
D
f(x) = 4x – 10
14

What is the product?

Question illustration
A
24 a squared minus 6 b
Option A
B
24 a squared minus 6 a b
Option B
C
24 a squared minus 18 b squared
Option C
D
24 a squared minus 18 a b
Option D
15

A team is selling discount cards as a fundraiser. The table shows the number of cards sold and the remaining amount of money needed.

Question illustration
A
zero
B
undefined
C
negative
D
positive
16

Which system of linear inequalities has the point (2, 1) in its solution set?

A
y less-than negative x + 3. y less-than-or-equal-to one-half x + 3
Option A
B
y less-than negative one-half x + 3. y less-than one-half x.
Option B
C
Option
Option C
D
y less-than one-half x. y less-than-or-equal-to negative one-half x + 2
Option D
17

Which shows all the values of x that make the rational expression undefined?

Question illustration
A
x = 6
B
x = 7
C
x = –6 or x = 6
D
x = –7 or x = 7
18

Becky created a graph to represent her distance away from home one afternoon. She left home and ran to the park, met some friends and stayed at the park, and then walked back home using the same route. Which graph could Becky have created?

A
Option
B
Option
C
Option
D
Option
19

Which term can be added to the list so that the greatest common factor of the three terms is 12h3?36h3, 12h6, __________

A
6h3
B
12h2
C
30h4
D
48h5
20

Which graph represents the function y = 2x – 4?

A
Option
B
Option
C
Option
D
Option

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