In determining whether to legally protect his song "gotta give it up," marvin gaye followed the rule of thumb of

a. observing trends

b. solving a problem

c. finding gaps in the marketplace

d. protecting a competitive advantage

e. having value in the marketplace

Warren company plans to depreciate a new building using the double declining-balance depreciation method. the building cost $870,000. the estimated residual value of the building is $57,000 and it has an expected useful life of 20 years. assuming the first year's depreciation expense was recorded properly, what would be the amount of depreciation expense for the second year?