On January 1, 2024, Canseco Plumbing Fixtures purchased equipment for $62,000. Residual value at the end of an estimated four-year service life is expected to be $6,000. The company expects the equipment to operate for 10,000 hours. The equipment operated for 3,800 and 4,600 hours in 2024 and 2025, respectively.

Required:

1. Calculate depreciation expense for 2024 and 2025 using straight-line method.
2. Calculate depreciation expense for 2024 and 2025 using double-declining-balance method.
3. Calculate depreciation expense for 2024 and 2025 using units-of-production using hours operated.