Asked Jan 24, 2019

A phone company charges $14.99 a month and 10 cents for every minute above 120 minutes. Write an expression for the monthly phone charge, P, in dollars, as a function of the number of minutes, m, used that month.


Expert Answer

Step 1

Given that rental charges = $14.99 per month


Step 2

Let m represents number of minutes in a month.

Then minute above 120 minutes = m - 120

Step 3

Now cost for 1 minute above 120 minutes = 10 cents = $ 0.10


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