Question

The telephone company charges $3.00 per month and $0.05 for every minute (m) of talk time. The expression below can be used to calculate the total monthly telephone charges.

$3.00 + $0.05m

Based on this expression, what is the monthly cost, in dollars, to talk for 3 hours?

Answer 1

Answer:

There are 60 minutes in 1 hour, so 3 hours is equal to 3 x 60 = 180 minutes.

Using the given expression, the monthly cost to talk for 3 hours is

$3.00 + $0.05(180) = $3.00 + $9.00 = $12.00

Therefore, the monthly cost to talk for 3 hours is $12.00.