The Sprague Company purchased a fabricating machine on January 1, 2020, at a net cost of $130,000. At the end of its four-year useful life, the company estimates that the machine Wills be worth $30,000.Sprague also estimates that the machine will run for 25,000 hours uring its four-year life. The company's fiscal year ends on December 31.

Required:

Compute depreciation expense for 2021 through 2024 using each of the following methods:

1.Straight-line

2.Double-declining-balance

3.Sum-of-the-years'-digits

4.Units of production (using machine hours); actual production was as follows:

Year Machine Hours

2020 6,000

2021 8,000

2022 5,000

2023 7,000