Helm Corporation purchased a machine with an initial cost of $80,000, a residual value of $5,000, and an estimated useful life of 10 years. At the beginning of the fifth year, Helm spent $10,000 for an extraordinary repair. Following the repair, Helm estimated that the machine had a remaining useful life of 8 years, and that the residual value was unchanged. Calculate depreciation expense on the machine for the fifth year, assuming that Helm uses the straight-line method. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a $5,625 b $6,875 $7,250 d $7,500