Mike and Krista rent a jet ski while on vacation. The rental cost is represented by the function c(h)=50+20h. where h is the number of hours of use and c(h) is the total cost for h hours of use. How much does the jet ski cost if they use it for 4 hours?
To find out how much the jet ski costs if they use it for 4 hours, we need to substitute h=4 into the function c(h)=50+20h.
c(4) = 50 + 20(4)
c(4) = 50 + 80
c(4) = 130
Therefore, the jet ski costs $130 if they use it for 4 hours.