A pre-paid cell phone company charges $13.45 as a monthly access fee and $0.08 per minute of calling time. Express the monthly cost C in terms of minutes of call time

Question

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Answer 1

This question is asking you to write an algebraic equation to find the monthly cost. Let C be the monthly cost in dollars and x be the calling time in minutes.

If this company charges $13.45 as a monthly access fee, plus $0.08 per minute of calling time, then your equation should look like this:

C = 0.08x + 13.45

Your access fee is a constant. The mention of "and" implies addition between the access fee (13.45) and minute rate, and "per" implies multiplication of the minute fee (0.08) by the minutes of calling time.