Question 8 - Mathematics Practice Test for the ACT

Marcos needs a new phone. The phone he wants is priced at $250, he will need to pay $40 each month for unlimited data, and he will be charged $0.05 per minute of conversation. Which of the following functions represents the total cost of Marcos’s new phone and plan at any time? Use the variables d to represent months of data and c to represent minutes of conversation.

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