Computing Straight-Line and Double-Declining-Balance Depreciation On January 2, 2013, Dechow Company purchases a machine that manufactures a part for one of its key products. The machine cost $220,500 and is estimated to have a useful life of six years, with an expected salvage value of $18,600. Compute depreciation expense for 2013 and 2014 for the following depreciation methods. (When equipment is used exclusively in the manufacturing process, the depreciation is more accurately recorded as part of cost of goods sold and not as depreciation expense.) Straight-line. Double-declining-balance