22. The lifetime of a car has a distribution H and probability density h.

Ms. Jones buys a new car as soon as her old car either breaks down or reaches the age of T years. A new car costs C1 dollars and an additional cost of C2 dollars is incurred whenever a car breaks down. Assuming that a T -year-old car in working order has an expected resale value R(T ), what is Ms. Jones’ long-run average cost?