Sketches Inc. purchased a machine on January 1, 2016. The cost of the machine was $35,000. Its estimated residual value was $11,000 at the end of an estimated 5-year life. The company expects to produce a total of 20,000 units. The company produced 1,300 units in 2016 and 1,750 units in 2017. Required a. Calculate depreciation expense for 2016 and 2017 using the straight-line method. 2016 2017 Depreciation Expense