A copier costs X and will have a salvage value of Y after n years. i) using the straight line method, the annual depreciation expense is $1000. ii) using the sum of the years digits method, the depreciation expense in year 3 is $800. iii) using the declining balance method, the depreciation expense is 33.125% of the book value at the beginning of the year. Calculate X (provide excel spreadsheet in your answer).