3. The Canada Wide Car Rental Company charges \( 20 c \) for every kilometre driven. The average renter drives the rental car \( 250 km \) . If the price is increased, renters will drive shorter distances. The graph represents data collected by market research.
a) Describe the relationship between price per kilometre and revenue.
b) Use the graph to estimate the revenue at \( 204 / km \) and at \( 404 / km \) .
c) If the price doubles, will the revenue also double? Support your answer.
d) Consider the rate of change of revenue with respect to price. What are the appropriate units for this rate of change?
e)Is the rate of change of revenue with respect to price increasing, constant, or decreasing? Give a reason for your answer.