3. Sketches Inc purchased a machine on January 1, 2016. The cost of the machine was $39,500. Its estmated residual value was $12,500 at the end of an estimated 5-year life. The company expects to produce a total of 10,000 units. The company produced 1,450 units in 2016 and 1,900 units in 2017 a. Calculate depreciation expense for 2018 and 2017 using the straight-ine method b Calculate the depreciation expense for 2018 and 2017 using the units-of-production method. (Do not round your intermediate calculations Round your final answers to the nearest whole dollar) Expense C. Calculate deprecation expense for 2010 through 2020 using the double decining balance method. (Round your final answer to nearest dollar value