O d. Monthly maintenance to the machine On January 1, 2018, a machine is purchased for $100,000. It is expected to have a useful life of 10 years, during which time it is expected to be used for 20,000 hours. The salvage value is $20,000. It is used for 5,000 hours in 2018 and 4,000 in 2019. What is the book value at 12/31/19? (The company uses the units-of-production method.) Select one: O a. $44,000 b. $55,000 c. $65,000 d. $35,000 o e. $64,000 A company purchased factory equipment for $28,000. It is estimated that the equipment will have an $8,000 salvage value at the end of its estimated 10-year useful life. If the company uses the double-declining- balance method of depreciation, the book value at the end of the second year after purchase would be Select one: a. $9.920 ub. $17,920 c. $10,080 d. $22,680 e. $181080