Question

A students cell phone plan has a monthly charge of $40 for 600 minuets of uses and a 0.25/minutes charge for each additional minute. Last month, the student talked on the phone for 790minutes. Which is the following is the bill for month?

Answer 1

So they went 190 minutes over her allowed 600. Multiply 190x .25 (price per minute and number of minutes) to get 47.5 and then add that to 40 (the monthly charge. $87.50 is her bill for the month.