Computer equipment was acquired at the beginning of the year at a cost of $63,000 that has an estimated residual value of $3,000 and an estimated useful life of five years. Determine the (a) depreciable cost (b) double-declining-balance rate, and (c) double-declining-balance depreciation for the first year. a. Depreciable cost b. Double-declining-balance rate c. Double-declining-balance depreciation for the first year