3. On January 1, 2017, Seaplane Adventures Ltd. purchased a sea plane for use in their lake wilderness weekends. The following information is available: Cost: $30,000 Estimated useful life: 6 years or 8,000 hours Residual value: $8,000 Hours in 2017: 1,500 hours Assuming that the company depreciates on the basis of 50% each in the years of acquisition and disposal, calculate the usage depreciation for 2018.