Leonardo Products purchased a machine on January 1, Cost Salvage Useful life $ $ 1,000,000 150,000 5 5 a. Calculate the expected depreciation for 2018 using straight line b. Calculate the depreciation expense for 2018 using unit of activity is the expected useful life is machine hours are 100,000, and 20,000 are used in 2018 C. Calculate the expected depreciation for 2018 using sum of the year's digits d. Calculate the expected depreciation for 2018 through end of useful life using the double-declining balance method