AnswersCMS 2026-2027 NC Math 1 CREDIT RECOVERYExponential Functions

Practice Test Answers

10 verified answers
1
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Which expression is equivalent to 1?

A
x2⋅x2
B
the fraction with numerator x squared and denominator y squared
C
open paren x squared close paren to the 0 power
D
0 to the 0 power
2
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Which function represents exponential decay?

A
f of x is equal to 4 times open paren negative 2 thirds close paren to the x th power
B
f of x is equal to 1 half times open paren negative 3 halves close paren to the x th power
C
f of x is equal to 1 half times 3 halves to the x th power
D
f of x is equal to 4 times 2 thirds to the x th power
3

Which function represents exponential growth?

A
f of x is equal to 3 x
B
f of x is equal to x cubed
C
f of x is equal to x plus 3
D
f of x is equal to 3 to the x th power
4

Choose the correct answer from the drop-down menu to complete the statement.

Answer:

Insufficient information: the statement to complete is missing

5

Pherris is graphing the function f of x is equal to 2 times 3 to the x th power He begins with the point 1 comma 6 Which could be the next point on his graph?

A
2 comma 12
B
2 comma 18
C
3 comma 7
D
2 comma 7
6

Read the scenario. A tree grows 3 feet every year. How does this scenario show one quantity changing at a constant rate relative to another?

A
The tree's height changes with the seasons.
B
The tree's growth depends on how much sunlight it gets each day.
C
The growth rate of the tree slows down as it gets older.
D
The height of the tree increases by the same amount each year.
7

If a linear function has a slope of 2, what does this tell us?

A
The line rises two units for every one unit it moves horizontally.
B
The line rises one unit for every two units it moves horizontally.
C
The line's rise is half of its run.
D
The line's rise is twice its run.
8

Tanisha is graphing the function f of x is equal to 25 times 3 fifths to the x th power She begins by plotting the point 1 comma 15 Which could be the next point she plots on the graph?

A
2 comma negative 10
B
2 comma 5
C
2 comma 14 and 2 fifths
D
2 comma 9
9

Which explains why the graphs of geometric sequences are a series of unconnected points rather than a smooth curve?

A
The range contains only natural numbers.
B
The domain contains only natural numbers.
C
Initial values must be whole numbers.
D
Exponential bases must be whole numbers.
10

Which is the graph of the sequence defined by the function f of x is equal to 100 times 0 point 5 raised to the x minus 1 power ?

A
Image with description A coordinate plane with four labeled points. The x-axis is labeled from 1 to 5 in increments of 1 and the y-axis is labeled from 10 to 100 in increments of 10. The labeled points are as follows: the point 1 comma 100 is marked near the top, the point 2 comma 50 is marked at the center, the point 3 comma 25 is marked below center, and the point 4 comma 12.5 is marked near the lower right.
B
Image with description A coordinate plane with four labeled points. The x-axis is labeled from 1 to 5 in increments of 1 and the y-axis is labeled from 10 to 100 in increments of 10. The labeled points are as follows: the point 0 comma 100 is marked near the top of the y-axis, the point 1 comma 50 is marked at the center left, the point 2 comma 25 is marked below center, and the point 3 comma 12.5 is marked near the lower right.
C
Image with description A coordinate plane with three labeled points. The x-axis is labeled from 1 to 5 in increments of 1 and the y-axis is labeled from 10 to 100 in increments of 10. The labeled points are as follows: the point 1 comma 100 is marked near the top left, the point 3 comma 90 is marked just below the top center, and the point 5 comma 80 is marked at the center right.
D
Image with description A coordinate plane with three labeled points. The x-axis is labeled from 1 to 5 in increments of 1 and the y-axis is labeled from 10 to 100 in increments of 10. The labeled points are as follows: the point 0 comma 100 is marked near the top of the y-axis, the point 2 comma 90 is marked just below the top center, and the point 4 comma 80 is marked at the center right.

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