At the beginning of the year, Palermo Brothers, Inc., purchased a new plastic water bottle making machine at a cost of $78,000. The estimated residual value was $9,000. Assume that the estimated useful life was four years, and the estimated productive life of the machine was 690,000 units. Actual annual production was as follows:

Year	Units
1	207,000
2	151,800
3	189,750
4	141,450

Required:

1. Complete a separate depreciation schedule for each of the alternative methods.

a. Straight-line.

b. Units-of-production.

c. Double-declining-balance.