Question

A cell phone company offers you a plan that charges a flat rate of $25 per month for 200 minutes of airtime. The rate for any time in excess of 200 minutes is $0.12 per minute.

a) Write an expression for the monthly dollar amount spent for the cell phone service if you use x minutes of airtime in excess of 200 minutes.


b) Evaluate the plan for 60 minutes of airtime in excess of 200 minutes.