(b) Calculate the amount of depreciation expense that Martinez should record for Machine B each year of its useful life under the following assumptions. (Round depreciation cost per unit to 2 decimal places, eg. 12.25. Round final answers to O decimal places, eg. 2,125.) Martinez uses the declining-balance method. The rate used is twice the straight-line rate. Martinez uses the units-of-activity method and estimates that the useful life of the machine is 141.500 units. Actual usage is as follows: 2022, 53,000 units; 2023, 40,000 units; 2024, 27,000 units; 2025, 21,500 units. (1) Martinez uses the straight-line method of depreciation. (2) (3) 323 2022 2023 Depreciation Expense 2024 Straight- line $ $ method Declining balance $ $ method Units-of- activity method $ $ $ 2021 din 2023 Depreciation Expense 2024 2025 $ $ $ $ $ $