just need help with part b, double decline method.

Becker Office Service purchased a new computer system on January 1, Year 1, for $33,000. It is expected to have a five-year useful life and a $3,900 salvage value. Becker Office Service expects to use the computer system more extensively in the early years of its life. assuming the use of straight-line depreciation. b. Calculate the depreciation expense for each of the five years, assuming the use of double-declining-balance depreciation. d. Assume that Becker Office Service sold the comnuter evetem Year Annual Depreciation 1 2 3 4 on 5