A machine was purchased for $100,000 on January 1, 2020. It was estimated that it would have a $10,000 salvage value at the end of its 10-year useful life. It was also estimated that the machine would be run 100,000 hours in the 10 years. The company ran the machine for 11,000 actual hours in 2020. If the company uses the straight line method of depreciation, the amount of depreciation expense for 2020 would be If the company uses the double declining balance method of depreciation, the amount of depreciation expense for 2020 would be If the company uses the units-of-activity method of depreciation, the amount of depreciation expense for 2020 would be