Identifying variable, fixed, and mixed cost functions. The Pacific Corporation operates car rental agencies at more titan 20 airports. Customers can choose from one of three con¬

tracts for car rentals of one day or less:

Contract 1: $60 for the day Contract 2: $36 for the day plus $0.24 per kilometre travelled Contract 3: $1.20 per kilometre travelled Required 1. Present separate plots for each ofthe three contracts, with costs on the vertical axis and kilo¬

metres travelled on the horizontal axis.

2. Describe each contract as a linear cost function ofthe formy = a + bX.

3. Describe each contract as a variable, fixed, or mixed cost function.