Taco Hut purchased equipment on May 1, 2018, for $16,000. Residual value at the end of an estimated 8-year service life is expected to be $4,000. Calculate depreciation expense using the straight-line method for 2018 and 2019, assuming a December 31 year-end. (Do not round your intermediate calculations Round your final answers to the nearest whole dollar.) Year 2018 2019 ens