AnswersCR27 ALG 1-1200310-S2-Degele-VOL7006PIntroduction to Modeling with Functions

Introduction to Modeling with Functions — Unit test Answers

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21
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The graph represents the expected hourly revenue, in dollars, y, earned by a car wash for each decrease of x dollars in the price of a car wash.

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A
$100
B
$150
C
$200
D
$225
22
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The graph shows the daily revenue earned selling coupon cards in a fundraiser if the price is decreased by x dollars.

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A
R(x) = –x2 + 6x + 40
B
R(x) = –(x – 4)(x + 10)
C
R(x) = –(x2 – 14x + 40)
D
R(x) = –(x + 3)2 + 49
23

Brandon enters a contest at the gym. He earns 1 point for his first workout. If he works out the next day, he earns double the points of the previous day. Brandon creates the graph to show the number of points that can be earned on the nth consecutive day of working out.

Question illustration
A
8
B
32
C
64
D
128
24

Which functions have a vertex with a x-value of 0? Select three options.f(x) = |x|f(x) = |x| + 3f(x) = |x + 3|f(x) = |x| − 6f(x) = |x + 3| – 6

A
f(x) = |x|
B
f(x) = |x| + 3
C
f(x) = |x + 3|
D
f(x) = |x| − 6
E
f(x) = |x + 3| – 6
25

The graph shows the relationship between the weight of a box and the number of books added to the box.

Question illustration
A
f(x) = 0.5x + 1.5
B
f(x) = 0.75x + 2
C
f(x) = 1.5x + 0.5
D
f(x) = 2x + 0.75

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