Part D pls

A tractor for over-the-road hauling is purchased for $85,000.00. It is expected to be of use to the company for 6 years, after which it will be salvaged for $3,200.00. Calculate the depreciation deduction and the unrecovered investment during each year of the tractors life. a. Use straight-line depreciation. Provide depreciation and book value for year 6. Depreciation for year 6 = $ 13633.33 book value for year 6 = 3200.00 b. Use declining-balance depreciation, with a rate that ensures the book value equals the salvage value. Provide depreciation and book value for year 6. 2343.19 Depreciation for year 6 = book value for year 6 = 3235.84 c. Use double declining balance depreciation. Provide depreciation and book value for year 6. 3731.14 Depreciation for year 6 = book value for year 6 = 7462.28 d. Use double declining balance, switching to straight-line depreciation. Provide depreciation and book value for year 6. Depreciation for year 6 = $ book value for year 6 = $