Mountain View Resorts purchased equipment at the beginning of 2021 for $44,000. RE year service life is expected to be $6,900. The machine operated for 2,700 hours in th machine to operate for a total of 10,000 hours over its four-year life. Calculate depreciation expense for 2021, using each of the following depreciation meth balance, and (3) activity-based. (Round your intermediate calculations to 2 decimal pla Depreciation Expense Straight-line Double-declining-balance Activity-based