a piece of equipment was acquired on january 1, year1, at a cost of $22,000, with an estimated residual value of $2,000 and an estimated useful life of ten years. the company uses the double-declining-balance method. this content is copyrighted what is the net book value of the equipment at december 31, year2 (after 2 full years have passed)? a. $12,800 b. $14,800 c. $12,080 d. $13,200 e. $14,080