Computing Depreciation with a Change in Depreciation Method Whitney Company purchased equipment on january 1 of Year 1 , for $45,000. This equipment has a useful life of 6 years and a residual value of $2,500. The compary uses the double-declining depreciation method, On January 1 of Year 4 , the company changes its depreciation method to the straight-line method. Compote depreciation expense for Year 4 Note: Carry all decirmals in calculations, round the final answer to the nearest dollar. Depreciation expense for Year 4:5