A machine is purchased for $ 10500 and has an expected service life of 5 years. At the end of the 5 years, the salvage value is estimated to be $ 3600.
Find the book value at the end of 2 years using straight-line depreciation, the book value at the end of 2 years using sum of the years digits depreciation, and the book value at the end of 2 years using modified accelerated cost recovery system depreciation.