AnswersCMS 2026-2027 NC Math 1 CREDIT RECOVERYFunctions

Practice Test Answers

14 verified answers
1
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Which intervals show f of x increasing? Choose two correct answers.

A
left parenthesis negative 1 point 6 comma 0 right bracket
B
left bracket negative 2 point 5 comma negative 1 point 6 right parenthesis
C
0 point 8 comma 2
D
left bracket 0 comma 0 point 8 right parenthesis
E
left bracket negative 2 comma negative 1 right bracket
2
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To the nearest tenth of a second, how much time would it take the penny to hit the ground?

A
0 point 8 seconds
B
0 point 6 seconds
C
0 point 5 seconds
D
0 point 7 seconds
3

f of x is less than 0 over negative infinity comma negative 3 and what other interval?

A
negative 2 point 4 comma negative 1 point 1
B
negative 1 point 1 comma 2
C
negative 1 point 1 comma 0 point 9
D
negative 3 comma negative 1 point 1
4

Which ordered pair could be the missing values represented by x comma y ?

A
0 comma 18
B
8 comma 20
C
5 comma 19 point 5
D
10 comma 21 point 5
5

The graph shows the relationship between the number of strawberries eaten and the approximate number of calories consumed. Which statement is true?

A
Twenty-four strawberries contain 6 calories.
B
Four strawberries contain 15 calories.
C
Each strawberry contains 3 calories.
D
Each strawberry contains 4 calories.
6

For each additional slice of pizza that is purchased, by how much does the total cost of lunch increase?

A
1 point 5 0 dollars
B
3 point 0 0 dollars
C
2 point 5 0 dollars
D
2 point 0 0 dollars
7

Which could be the entire interval over which the function, f of x , is negative?

A
negative infinity comma negative 6
B
negative 8 comma 0
C
negative infinity comma negative 4
D
negative 8 comma negative 2
8

Which best describes the relationship between the successive terms in the sequence shown? 9 comma negative 1 comma negative 11 comma negative 21 comma dots

A
The common ratio is negative 9 .
B
The common ratio is 9 .
C
The common difference is negative 10 .
D
The common difference is 10 .
9

Which graph represents a function?

A
Image with description A coordinate plane with an S-shaped curve. The x-axis is labeled from negative 5 to 5 in increments of 1 and the y-axis is labeled from negative 5 to 5 in increments of 1. The curve extends from the upper-left area of the plane with an arrow near negative 3 comma 5 pointing upward to the left. The curve descends with a decreasing negative slope through the center of the plane, passing through approximately 0 comma 0 at the origin, then continues to descend with an increasing negative slope into the lower-right area of the plane, ending with an arrow near 3 comma negative 5 pointing downward to the right.
B
Image with description A coordinate plane with a straight line of negative slope. The x-axis is labeled from negative 5 to 5 in increments of 1 and the y-axis is labeled from negative 5 to 5 in increments of 1. The line extends from the upper-left area of the plane near negative 4 comma 4, passing through the origin area, and continues to the lower-right, ending near the point 0 comma negative 2. The line has a steep negative slope.
C
Image with description A coordinate plane with two parallel straight lines of positive slope. The x-axis is labeled from negative 5 to 5 in increments of 1 and the y-axis is labeled from negative 5 to 5 in increments of 1. The first line extends from the lower-left area of the plane near negative 3 comma negative 5 to the upper-right area near 0 comma 4. The second line extends from the lower-left area near negative 1 comma negative 5 to the upper-right area near 2 comma 4. Both lines have the same steep positive slope and are spaced approximately 2 units apart horizontally.
D
Image with description A coordinate plane with a sideways parabola opening to the right. The x-axis is labeled from negative 5 to 5 in increments of 1 and the y-axis is labeled from negative 5 to 5 in increments of 1. The curve has its vertex at approximately negative 1 comma 0 on the x-axis. The upper arm of the curve extends upward and to the right, ending near the point 3 comma 3. The lower arm of the curve extends downward and to the right, ending near the point 3 comma negative 3.
10

Ahmed has five more CDs than one-half the number of CDs Julia has. In this situation, what does 1 half c plus 5 represent?

A
the number of CDs Ahmed has
B
the number of CDs Ahmed has more than Julia
C
the number of CDs Julia has
D
the number of CDs Ahmed and Julia have altogether
11

Consider the function represented by the equation x minus y is equal to 3 What is the equation written in function notation, with x as the independent variable?

A
f of x is equal to negative y minus 3
B
f of x is equal to x minus 3
C
f of x is equal to y plus 3
D
f of x is equal to negative x plus 3
12

Tasha earns 400 dollars per week plus a commission of 10 percent on her weekly sales. Each week she saves 1 fourth of her earnings. What does the expression 400 plus 0 point 1 s represent in this situation?

A
Tasha's weekly commission
B
the amount Tasha earns each hour
C
Tasha's weekly earnings
D
the amount Tasha saves each week
13

On his first day of school, Kareem found the high temperature in degrees Fahrenheit to be 76.1 degrees He plans to use the function C of F is equal to 5 ninths times F minus 32 to convert this temperature from degrees Fahrenheit to degrees Celsius. What does C of 76 point 1 represent?

A
the temperature of 76 point 1 degrees Celsius converted to degrees Fahrenheit
B
the amount of time it takes a temperature of 76 point 1 degrees Fahrenheit to be converted to 32 degrees Celsius
C
the amount of time it takes a temperature of 76 point 1 degrees Celsius to be converted to 32 degrees Fahrenheit
D
the temperature of 76 point 1 degrees Fahrenheit converted to degrees Celsius
14

A sequence is defined recursively by the formula f of n plus 1 is equal to negative 2 f of n The first term of the sequence is negative 1 point 5 What is the next term in the sequence?

A
0 point 5
B
negative 3
C
negative 3 point 5
D
3

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