Equipment with a cost of $189,000 has an estimated residual value of $24,000, has an estimated useful life of 15 years, and is depreciated by the straight-line method.
(a) Determine the amount of the annual depreciation.
(b) Determine the book value at the end of the ninth year of use.
(c) Assuming that at the start of the tenth year the remaining life is estimated to be eight years and the residual value is estimated to be $6,000, determine the depreciation expense for each of the remaining eight years.