please provide the ones I got wrong

On January 2, 2015, Alvarez Company purchased an electroplating machine to help manufacture a part for one of its key products. The machine cost $218.700 and was estimated to have a useful life of six years or 700,000 cuttings, after which it could be sold for $23.400. Required a. Calculate each year's depreciation expense for the period 2015-2020 under each of the following depreciation methods (round all answers to the nearest dollar 1. Straight-line. 2. Double-declining balance. 3. Units-of-production. (Assume annual production in platings of: 140,000; 180,000; 100,000; 110,000; 80,000; and 90,000.) 1. Straight-Line Depreciation Year Expense 2015 $ 32,550 2016 32,550 32550 2018 32.550 2019 32,550 2020 32,550 2017 2. Double-declining balance Depreciation Year Expense 2015 $ 65,107 x 2016 45,725 x 2017 32.112 x 2018 22,553 x 2019 15,839 X 2020 11.123 x 3. Units of Production Depreciation Year Expense 2015 $ 39,060 2016 50,220 2017 27,900 2018 30,690 2019 22,320 2020 25.110 b. Assume that the machine was purchased on September 1, 2015. Calculate each year's depreciation expense for the period 2015-2020 under each of the following depreciation methods: 1. Straight-line. 2. Double-declining balance. 1. Straight-Line Depreciation Year Expense 2015 $ 10,850 2016 32.550 2017 32,550 2018 32.550 2019 32,550 2020 32,550 2021 21.700 1. Straight-Line Depreciation Year Expense 2015 TOSO (2016 32550 2017 32.550 2018 32.550 2010 32550 32.550 2021 21.700 2000 2. Double-declining balance Depreciation Year Expense 2015 21.702 X 2016 58.646 X 41,187 X 2013 2926 2019 2015 2020 14 10.000