Revision of depreciation Equipment with a cost of $697,100 has an estimated residual value of $69,100, has an estimated useful life of 40 years, and is depreciated by the straight-line method. a. Determine the amount of the annual depreciation. fill in the blank 1 of 1$ b. Determine the book value after 22 full years of use. fill in the blank 1 of 1$ c. Assuming that at the start of the year 23 the remaining life is estimated to be 22 years and the residual value is estimated to be $59,100, determine the depreciation expense for each of the remaining 22 years. fill in the blank 1 of 1$