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?
y = 0.45m + 55 [equation]
m [number of miles] = 100
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.