Question

Which of the following sentences does not represent a function?

A
Notebooks are sold in a four pack for $20 and a five pack for $25.

B
Shaunette charges $20 for one hour of babysitting and $40 for two hours.

C
Marcy drove 50 miles in one hour today and 100 miles in two hours yesterday.

D
Timon chewed six gumballs in two hours today and six gumballs in three hours yesterday.

Answer 1

D.

Explanation:

A function is represented by every input has only one output. Let’s look at each of the answer choices:

A. Input 4 notebooks, cost is $20 and input 5 notebooks, cost is $25. This is a function

B. Input 1 hour, charge is $20 and input 2 hours, charge is $40. This is a function

C. Input 1 hour, drove 50 miles and input 2 hours, drove 100 miles. This is a function.

D. Input 6 gum balls chewed, chewed in 2 and 3 hours. This is NOT a function. The input does not have only one output.

I hope this helps! :)

Answer 2

D

Timon chewed six gumballs in two hours today and six gumballs in three hours yesterday.

Explanation: