4) Marlow Company 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? A) $680. B) $480. C) $544. D) $600. E) $300. A ) Marlow Company purchased a point of sale system on January 1 for $6,100. This syste as a useful life of 5 years and a salvage value of $750. What would be the depreciation expe or the second year of its useful life using the double-declining-balance method? A) $1,464. B) $1,070. C) $1,400. D) $2,140. E) $2,440.