Purity Ice Cream Company bought a new ice cream maker at the beginning of the year at a cost of $8,000. The estimated useful life was four years, and the residual value was $800. Assume that the estimated productive life of the machine was 10,000 hours. Actual annual usage was 3,800 hours in year 1; 3,500 hours in year 2; 2,500 hours in year 3; and 200 hours in year 4.

Required:
1-a.	Complete a separate depreciation schedule by usingStraight-line method.(Round your answers to the nearest dollar amount.Make sure that the carrying amount at the end of year 4 is equal to the residual value. Depreciation expense for the last period should be calculated as Carrying value of 3rd year minus residual value.)

1-b.

Complete a separate depreciation schedule by using Units-of-production method.(Round your answers to the nearest dollar amount. Make sure that the carrying amount at the end of year 4 is equal to the residual value. Depreciation expense for the last period should be calculated as Carrying value of 3rd year minus residual value.)

1-c.

Complete a separate depreciation schedule by using Double-declining-balance method.(Round your answers to the nearest dollar amount. Make sure that the carrying amount at the end of year 4 is equal to the residual value. Depreciation expense for the last period should be calculated as Carrying value of 3rd year minus residual value.)