Write an equation relating C to M

Question

A car rental company's standard charge includes an initial fee plus an additional fee for each mile driven. The standard charge S (in dollars) is given by the function S=16.95+40M, where M is the number of miles driven.

 

 

The company also offers an insurance option to insure the car against damage. The insurance charge (in dollars) is given by the function I=5.70+0.25M.

 

Let C be the total charge in dollars for a rental that includes insurance. Write an equation relating C to M. Simplify your answer as much as possible

Answer 1

s=16.95 + .4m

 

I = 5.7 +.25 m

 

c=s+I      --- >   c= 22.65 + .65M