11. Change in Estimates -Wardell Company purchased a minicomputer on January 1, 2017 at a cost of $50,000. The computer was depreciated using the straight-line method over an estimated 8-year life with a residual value of $4,000. On January 1, 2019, the estimated useful life of the computer was changed to a total of 5-years, and the estimate of residual value was changed to $500. Compute the amount of depreciation expense to be recorded in 2019.+