Cleveland Heights Industries bought a machine on January 1, 2023, for $60,000. It is estimated that the machine will have a $5,000 salvage value at the end of its five-year useful life. It is also estimated that the machine will produce 100,000 units over its five-year life. Compute depreciation expense for 2023 using straight-line depreciation: $ Suppose the activity-based depreciation method is used. If 16,000 units of product are produced in 2023 and 24,000 units are produced in 2024, what is the book value of the machine at December 31, 2024? $ Suppose the double-declining-balance method of depreciation is used. Determine the balance of the Accumulated Depreciation account at December 31, 2025: $