On January 1, 2018, Trueblood, Inc. purchased a piece of machinery for use in operations. The total acquisition cost was $33,000. The machine has an estimated useful life of three years and a residual value of $3,000. Assume that units produced by the machine will total 16,000 during 2018, 23,000 during 2019, and 21,000 during 2020. Required: 1) Use this information to complete the following table. Depreciation Expense Book Value at End of Year Method 2018 2019 2020 2018 2019 2020 Straight-line Units-of- production Double-declining- balance