# What is the algebraic equation for renting a car costs $55 per day plus $0.45 per mile if the cost of the rental is $100?

##### 1 Answer

May 7, 2018

#### Answer:

y = 0.45m + 55 [equation]

m [number of miles] = 100

#### Explanation:

*Equation:*

y = mx + b

y = 0.45m (# of miles) + 55 (daily fee)

*To solve for m, the number of miles:*

100 = 0.45m + 55

Subtract 55 from each side.

45 = 0.45m

Divide by .45 to isolate for m.