Calculating depreciation expense using three different methods LO 6-3 Weir Service Company purchased a copier on January 1, 2014, for exist16, 700 and paid an additional exist360 for delivery charges. The copier was estimated to have a life of four years or 1,000,000 copies. Salvage was estimated at exist1, 700. The copier produced 227,000 copies in 2014 and 254,000 copies in 2015. Required a. Compute the amount of depreciation expense for the copier for calendar years 2014 and 2015, using Straight-line method. b. Compute the amount of depreciation expense for the copier for calendar years 2014 and 2015, using Units-of-production method. (Round "Cost per unit" to 3 decimal places.) c. Compute the amount of depreciation expense for the copier for calendar years 2014 and 2015, using Double-declining-balance method