View Policies Current Attempt in Progress A factory machine was purchased for $376000 on January 1, 2021. It was estimated that it would have a $72000 salvage value at the end of its 5-year useful life. It was also estimated that the machine would be run 32000 hours in the 5 years. The company ran the machine for 4200 actual hours in 2021. If the company uses the units-of-activity method of depreciation, the amount of depreciation expense for 2021 would be O $72000. $39900, $49350 Q$79800. Save for Later Attempts: 0 of 1 used Submit