On January 2, 2015, Jatson Corporation acquired a new machine with an estimated useful life of five years. The cost of the equipment was $40,000 with an estimated residual value of $5,000. 

a. Prepare a complete depreciation table under the three depreciation methods listed below. Use a format similar to the illustrations in Exhibits 9-4, 9-5, and 9-6. In each case, assume that a full year of depreciation was taken in 2015.

1. Straight-line.

2. 200 percent declining-balance.

3. 150 percent declining-balance with a switch to straight-line when it will maximize depreciation expense.

b. Comment on significant differences or similarities that you observe among the patterns of depreciation expense recognized under each of these methods.