Mohr Company purchases a machine at the beginning of the year at a cost of $24,000. The machine is depreciated using the straight-line method. The machines useful life is estimated to be 5 years with a $4,000 salvage value. The book value of the machine at the end of year 2 is: Multiple Choice $4,000. $8,000. $12,000. $16,000. $20,000.