AnswersJPS-202526-Chatfield Summer School-Algebra I A-CR-M1-AlleyUnit Test

Unit Test — Unit test Answers

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1
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Which is equivalent to ?

Question illustration
A
3
B
6
C
9
D
12
2
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Which is the graph of the sequence defined by the function f(x) = 100(0.5)x - 1?

A
Option
B
Option
C
Option
D
Option
3

Which equation represents the function f(x) = (1.6)x after it has been translated 5 units up and 9 units to the right?

A
g(x) = (1.6)x + 5 − 9
B
g(x) = (1.6)x + 5 + 9
C
g(x) = (1.6)x − 9 + 5
D
g(x) = (1.6)x + 9 + 5
4

f(x) = g(x) = – 3

Question illustration
A
The range of g(x) is , {y | y > 0} and the range of f(x) is {y | y > –3}.
B
The range of g(x) is , {y | y > 3} and the range of f(x) is {y | y > 0}.
C
The asymptote of g(x) is the asymptote of f(x) shifted three units down.
D
The asymptote of g(x) is the asymptote of f(x) shifted three units up.
5

Which is the graph of g(x) = – 2?

Question illustration
A
On a coordinate plane, an exponential function decreases from quadrant 2 into quadrant 1 and approaches y = 0. It crosses the y-axis at (0, 2.25)
Option A
B
On a coordinate plane, an exponential function decreases from quadrant 2 into quadrant 1 and approaches y = 0. It crosses the y-axis at (0, 0.44)
Option B
C
On a coordinate plane, an exponential function decreases from quadrant 2, through quadrant 3, into quadrant 4 and approaches y = negative 2. It crosses the y-axis at (0, negative 1)
Option C
D
On a coordinate plane, an exponential function decreases from quadrant 2 into quadrant 1 and approaches y = 2. It crosses the y-axis at (0, 3)
Option D
6

Which of the following best describes how the y values are changing over each interval?xy122438416532

A
They are increasing by 2 each time.
B
They are increasing by 4 each time.
C
They are being multiplied by 2 each time.
D
They are being multiplied by 4 each time.
7

What are the domain and range of f(x) = + 2?

Question illustration
A
domain: ; range: {y | y > 0}
Option A
B
domain: ; range: {y | y > 2}
Option B
C
domain: {x | x is a real number}; range: {y | y > 2}
D
domain: {x | x is a real number}; range: {y | y > –2}
8

Which is a shrink of an exponential growth function?

A
f(x) = (3)x
Option A
B
f(x) = 3(3)x
C
f(x) =
Option C
D
f(x) =
Option D
9

Which is equivalent to ?

Question illustration
A
RootIndex 4 StartRoot 16 EndRoot Superscript 3 x
Option A
B
RootIndex 4 x StartRoot 16 EndRoot cubed
Option B
C
RootIndex 3 StartRoot 16 EndRoot Superscript 4 x
Option C
D
RootIndex 3 x StartRoot 16 EndRoot Superscript 4
Option D
10

Which formula can be used to describe the sequence?

Question illustration
A
f(x) = −3
Option A
B
f(x) = −3
Option B
C
f(x) = (3)x − 1
Option C
D
f(x) = (−3)x − 1
Option D
11

Which function represents exponential decay?

A
f(x) =
Option A
B
f(x) =
Option B
C
f(x) = 4
Option C
D
f(x) = 4
Option D
12

Which is a stretch of an exponential growth function?

A
f(x) =
Option A
B
f(x) =
Option B
C
f(x) =
Option C
D
f(x) =
Option D
13

What is the rate of increase for the function f(x) = ?

Question illustration
A
One-third
Option A
B
2
Option B
C
4
D
4
Option D
14

Which is the graph of the sequence defined by the function f(x + 1) = f(x) when the first term in the sequence is 375?

Question illustration
A
Option
B
Option
C
Option
D
Option
15

Which statements describe the domain and range of g(x)? Select two options.

A
The function g(x) is defined for all real numbers x.
B
The maximum value of the range is 4.
C
The maximum value of the domain is 3.
D
The range of g(x) is {y| –1 < y ≤ 4}.
E
The domain of g(x) is {x| –4 < x ≤ 3}.

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