Calculate depreciation expense, accumulated depreciation balance, and book value for each of the three years for the computer using straight-line, units of production, and double-declining balance methods. Info: The computer was purchased on July 1^st, 2016 for business use. Its initial cost was $9,000. The estimated life is 3 years with a residual value of $500. The computer is going to be used for 1,000 hours for 2016, 2, 200 hours for 2017, 2, 100 hours for 2018, and 900 hours for 2019 for a total of 6, 200 hours of use