On March 31, 2024, Canseco Plumbing Fixtures purchased equipment for $30,000. Residual value at the end of an estimated four-year service life is expected to be $2,000. The company expects the equipment to operate for 10,000 hours. The equipment operated for 2,200 and 3,000 hours in 2024 and 2025 , respectively. Required: a. Calculate depreciation expense for 2024 and 2025 using straight-line method. b. Calculate depreciation expense for 2024 and 2025 using double-declining-balance method. c. Calculate depreciation expense for 2024 and 2025 using units-of-production using hours operated. Complete this question by entering your answers in the tabs below. Calculate depreciation expense for 2024 and 2025 using straight-line method