Exercise $12\mathrm{.}11$

LO $12-3$

Estimating costs based on behavior patterns Thomas estimates that the costs of insurance, license, and depreciation to operate his car total $$580$ per month and that the gas, oil, and maintenance costs are $40$ cents per mile. Thomas also estimates that, on average, he drives his car $1,800$ miles per month.

Required:

a$.$ How much cost would Thomas expect to incur during September if he drove the car $2,256$ miles?

Page $465$

b$.$ Would it be meaningful for Thomas to calculate an estimated average cost per mile for a typical $1,800-$mile month? Explain your answer.