Depreciation Expense - The Sprague Company purchased a fabricating machine on July 1 2018, at a net cost of $130,000. At the end of its four-year life, the company estimates that the machine will be worth S30,000. Sprague also estimates that the machine will run for 25,000 hours during its four-year life. The company's fiscal year ends on December 31. 7. Compute depreciation expense for 2018 and 2019 using the Straight-Line method.+ 130,000-30,000 100,000 100,000/4 201 8: 25,000 / (6/12-$50,0004 2019: 25,000/ (12/12)-$25,000 a. 25,000 per year b. Compute depreciation expense for 2018 and 2019 using the Sum-of-the-Years digits method.+ (4*6)/2- 12+ Compute depreciation expense for 2018 and 2019 using the Double Declining Balance method. c. d. Compute depreciation expense for 2018 and 2019 using the Units-of-Production method. Actual machine hours in 2018 and 2019 were 4,000 and 8,000, respectively. +