Revision of Depreciation A warehouse with a cost of $367,400 has an estimated residual value of $39,400, has an estimated useful life of 40 years, and is depreciated by the straight-line method. a. Determine the amount of the annual depreciation. b. Determine the book value after 23 full years of use. c. Assuming that at the start of year 24 the remaining life is estimated to be 23 years and the residual value is estimated to be $38,500, determine the depreciation expenser for each of the remaining 23 years