Problem
The function c(x) = 0.47x + 20 represents the cost (in dollars) of a one-day truck rental when the truck is driven x miles.What is the truck rental cost when you drive 80 miles?
Solution
For this case we just need to replace into the function given by:
c(x) = 0.47x + 20
For this case we just need to replace x=80 mi and we got:
c(80)= 0.47*80 +20= 37.6 +20= 57.6