A sewing machine, costing $110,000, was placed into service at the beginning of the current year. We expect it to last us 5 years or run for 50,000 hours. The expected residual value is $10,000. REQUIRED: (1) Compute the depreciation for the first three years by each of the following methods: SHOW THE WORK OF HOW YOU CAME UP WITH THE ANSWERS (a) double-declining balance (b) straight-line depreciation (c) units-of-output (10,000 hours first year; 15,000 hours second year;12,000 hours third year )