The school bookstore rents graphing calculators for $5 per month. It also collects a non-refundable fee of $10.00 for the school year. a. Write the rule for the total cost (c) of renting a calculator as a function of the number of months (m). (Remember slope - intercept form and replace x and y with the variables they are using here)

b. How much is owed if a person rents graphing calculators for 6 months? Show your work.