A2 the beginning of 2020 , your company buys a $30,000 piece of equipment that it expects to use for 4 years. The equipment has an ewimated residual value of 2,000 , The compony expects to produce a total of 200,000 units Actual production is as follows: 40,000 units in 2020,53,000 units in 202151,000 units in 2022 , and 56,000 units in 2023 Required: a. Deterinine the depreciable cost b. Caiculate the depreciation expense per year under the straight-line method. c. Use the straight-ine method to prepare a depreciation schedule. d. Caiculate the depreclation rate per unt under the units-of-production method d. Case the units-of production method to prepare a depreciation schedule