Revision of Depreciation Equipment with a cost of $597,300 has an estimated resdal value of $54,300, has an estimated userte or 30 years, and is deprecated by the a. Determine the amount of the annual depreciation b. Determine the book value after 18 full years of use C. Assuming that at the start of the year 19 the remaining life is estimated to be 16 years and the residual value is estimated to be $42,700, determine the depreciation expense for each of the remaining 16 years