Question

a cellular phone company charges a base rate of $15.00 per month and $0.05 per minute,m, which equation could be used to find the total monthly charge in dollars,c?

Answer 1

Suppose you use "m" minutes in a month and each minute is $0.05, so your minute bill would be:

0.05 * m

Per month, there is a fixed rate of $15 , no matter how many minutes you use.

So, that's a fixed cost.

Total monthly charge would be:

15 + 0.05m

The cost, c, is:

$c=0.05m+15$

Correct Answer Choice is Option B