Bridgeport Company purchased equipment for $219,390 on October 1, 2017. It is estimated that the equipment will have a useful life of 8 years and a salvage value of $12,360. Estimated production is 40,200 units and estimated working hours are 19,700. During 2017, Bridgeport uses the equipment for 530 hours and the equipment produces 1,000 units. Compute depreciation expense under each of the following methods. Bridgeport is on a calendar-year basis ending December 31. (Round rate per hour and rate per unit to 2 decimal places, e.g. 5.35 and final answers to o decimal places, e.g. 45,892.) (a) Straight-line method for 2017 to (b) Activity method (units of output) for 2017 to (c) Activity method (working hours) for 2017 to (d) Sum-of-the-years'-digits method for 2019 o (e) Double-declining-balance method for 2018 to