On January 1, a machine with a useful life of five years and a residual value of $30,000 was purchased for $90,000. What is the depreciation expense for year 2 under the double-declining-balance method of depreciation? a. b. C. d. Select one: a. $36,000 b. $21,600 c. $17,280 d. $28,800 Next page Previous page Return to: General )