3 Mohr Company purchases a machine at the beginning of the year at a cost of $36,000. The machine is depreciated using the double-declining balance method. The machine's useful life is estimated to be 8 years with a $4,000 salvage value. Depreciation expense in year 2 is: 8 010923 Multiple Choice $27,000 $9,000 $4.500 o $6.750 38.000