Which of the following sentences does not represent a function?
Notebooks are sold in a four pack for $20 and a five pack for $25.

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

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

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


  1. Answer:


    Step-by-step 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! 🙂

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