On January 1, 2017, Vanowen Company purchased a machine for $80,000. The machine has an eight-year estimated useful life and an $8,000 estimated salvage value. In addition, the company expects to use the machine 200,000 hours. Assume that the machine was used 35,000 hours during 2017 and 32,000 hours in 2018 how do I compute depreciation production method