Question

Write an equation below to express the cost (c) as a function of miles (m).

The charge for a rental car is $20 plus $0.05 per mile.

Answer 1

c=20+m(0.05).  This is your equation

Answer 2

C=20+0.05m this is because in order to find the cost you need to multiply $0.05 by the amount of miles, plus the one time rental fee