Module 2 Practice Test

Which of the following does not represent a function?

• 
• 
• 
• 

Which of the following does not represent a function?

• 
• 
• 
• 

Which of the following does not represent a function?

• 
• 
• 
• 

If f(x) is the total cost, in dollars, of x candies, which of the following statements best describes the meaning of f(2) = 6?

The total cost of ​ ​ (a)   candies is ​ (b)   .

• $2.00
• $6.00
• 6

If f(x) is the height, in cm, of a sunflower plant that is x days old, which of the following statements best describes the meaning of f(60) = 210?

The height of the sunflower plant is ​ (a)   cm when it is ​ (b)   days old.

• 210
• 60

If f(x) is the total number of bacteria present in a sample after x hours, which of the following statements best describes the meaning of f(2) = 12?

The total number of bacteria present in the sample after ​ (a)   hours is ​ (b)   .

• 2
• 12

Given the function f(x) = −2x² + 3x + 10, find f(1) and f(3). Choose the statement that is true concerning these two values.

The value of f(1) ​ (a)   the value of f(3).

• is larger than
• is the same as
• cannot be compared to
• is smaller than

Given the function f(x) = −5x² + 2x + 9, find f(1) and f(2). Choose the statement that is true concerning these two values.

The value of f(2) ​ (a)   the value of f(1).

• is smaller than
• cannot be compared to
• is larger than
• is the same as

Given the function f(x) = −3x² + 4x + 6, find f(2) and f(3). Choose the statement that is true concerning these two values.

The value of f(2) ​ (a)   the value of f(3).

• is larger than
• is smaller than
• cannot be compared to
• is the same as

A factory's production is modeled by function f(x), where f(x) is the number of parts produced per hour and x is the number of people working during production. Choose the ordered pair that represents a possible domain and range of the function.

• (−1, 15)

• (5, −50)

• (5, 10)

• (−10, −100)