Hello, accounting question here. If you could explain formula as well, that would be greatly appreciated. Thank you!

Computing Depreciation Under Alternative Methods Equipment costing $132,000 is expected to have a residual value of $12,000 at the end of its five-year useful life. The equipment is metered so that the number of units processed is counted. The equipment is designed to process 1 0,000 units in its lifetime. In 2016 and 2017 the equipment processed 1 85,000 units and 1 45,000 units respectively. Calculate the depreciation expense for 2016 and 2017 using each of the following methods: a. Straight-line (Round to nearest dollar) 2016 s 2017 s b. Double-declining-balance (Round to nearest dollar) 2016 s 2017 s c. Units of production (Round to nearest dollar) 2016 s 2017 s