Depreciation for Partial Periods Bar Delivery Company purchased a new delivery truck for $45,000 on April 1, 2019. The truck is expected to have a service life of 10 years or 150,000 miles and a residual value of $3,000. The truck was driven 12,000 miles in 2019 and 20,000 miles in 2020. Bar computes depreciation expense to the nearest whole month. Required: Compute depreciation expense for 2019 and 2020 using the following methods: (Round your answers to the nearest dollar.) Straight-line method 2019 $ 2020 $ Sum-of-the-years'-digits method 2019 $ 2020 $ Double-declining-balance method 2019 $ 2020 $ Activity method 2019 $ 2020 $ For each method, what is the book value of the machine at the end of 2019