Question

The function below represents the monthly charges for a cell phone where x is the number of minutes used.

y = 0.05x + 25

What would be the amount of the bill if the phone is not used during the month?

Answer 1

$25

Explanation:

Since the phone's number of minutes used is being represented as x, and the phone was not used during the month, then all you have to do is replace x with 0. So,

y = 0.05 (0) + 25

y = 0 + 25

y = 25

so the amount of the bill is $25