2) Carleton Corporation purchased machinery on October 1, 2018, at a total cost of $98,000. Estimated residual value is $8,000, estimated life of the machinery is 6 years or 50,000 hours. During 2018 and 2019, the machinery was used 1,400 and 8,760 hours, respectively. Compute depreciation under straight-line, units-of-production, and double-declining-balance methods for 2018 and 2019. (8) Straight-line depreciation Units-of-production depreciation Double declining balance Depreciation 2018 2019