Mohr Company purchases a machine at the beginning of the year at a cost of $26,000. The machine is depreciated using the straight-line method. The machine's useful life is estimated to be 5 years with a $5,000 salvage value. The book value of the machine at the end of year 2 is: Multiple Choice $21,000. $4,200. $12,600. $17,600. $8,400