Exercise One On October 1, year 1, the Brittany Corporation purchased machinery for $116,000. The estimated service life of the machinery is 14 years and the estimated residual value is $8,000. The machine is expected to produce 221,000 units during its life. Required: 1-Calculate depreciation for year 1 and year 2 using each of the following methods. Straight line b. Double-declining balance c. Units of production (units produced in year 1, 14,000; units produced in year 2, 28,000)