Mohr Company purchases a machine at the beginning of the year at a cost of $31,000. The machine is depreciated using the double-declining-balance method. The machine's useful ife is estimated to be 5 years with a $4,000 salvage value. Depreciation expense in year 2 Multiple Choice O $6.200 $10,800. 0 $12,400. $12,400. o $7,440 $7,440. $18,600