Pexly Industries purchased a copier system with a cost of $ 62,000 and a salvage value estimated at $ 2,000. It was expected that the copier would last four years, over which time it would produce 6,000,000 copies. The copier actually produced 1,500,000 copies in Year 1, 1,900,000 copies in Year 2, 1,800,000 copies in Year 3, and 1,400,000 copies in Year 4. Calculate the depreciation expense and carrying value of the asset at year-end for each of the four years using the following methods:

(a) Straight-line method.

(b) Units-of-production method.

(c) Double-declining-balance method.