Ann Arbor is considering offering public bus service for free. Setting up the service will cost the city 0.9M (where M stands for million). The useful life of the buses is 16 years. Annual maintenance of the buses would cost $60,000 per year and they would need a major overhaul in year 10 that will cost a total of $535,000. This overhaul is in addition to the annual maintenance. Annual operating costs will begin at $95,000 in year 1 and