Hawaiian specialty foods purchased equipment for $16,000. residual value at the end of an estimated four-year service life is expected to be $1,600. the machine operated for 2,100 hours in the first year, and the company expects the machine to operate for a total of 15,000 hours. calculate depreciation expense for the first year using each of the following depreciation methods: (1) straight-line, (2) double-declining-balance, and (3) activity-based. (do not round your intermediate calculations.)