Depreciation for Partial Periods Hathaway Company purchased a copying machine for $8,700 on October 3, 2019. The machine's residual value was $500 and its expected service life was 5 years. Hathaway computes depreciation expense to the nearest whole month Required: 1. Compute depreciation expense for 2019 and 2020 using the following methods: (Round your answers to the nearest dollar) a. Straight-line method 20195 2020 $ b. Sum-of-the-years-digits method 2019 $ 2020 c. Double-declining balance method 2019 $ 20205