Cincinnati Gearing Systems purchased a point of sale system on January 1 for $3,400. This system has a useful life of 10 years and a salvage value of $400. What would be the depreciation expense for the second year of its useful life using the double-declining-balance method? Depreci tion Double 3 Accumulated Deprec iation Ending Book Value Beg. Book V alue Expense Straight line Cost - D $680. $480. $600. $544. $300