Straight-line depreciation A refrigerator used by a wholesale warehouse has a cost of $63,000, an estimated residual value of $5,500, and an estimated useful life of 15 years. This information has been collected in the Microsoft Excel Online file. Open the spreadsheet, perform the required analysis, and input your answer in the question below. Open spreadsheet S What is the amount of the annual depreciation computed by the straight-line method? Round your answer to the nearest dollar.