Equipment with a cost of $529,500 has an estimated residual value of $52,500, has an estimated useful life of 18 years, and is depreciated by the straight-line method. a. Determine the amount of the annual depreciation. fill in the blank 1 $

b. Determine the book value after 8 full years of use. fill in the blank $

c. Assuming that at the start of the year 9 the remaining life is estimated to be 13 years and the residual value is estimated to be $56,200, determine the depreciation expense for each of the remaining 13 years.