The company purchased equipment for $500,000 and they estimated the residual value to be $100,000 at the end of the estimated 8 years or 20,000 hours service life. For Straight-line: 1. Determine Book value at the end of year 3$ For Double declining balance: 2. Determine depreciation expense for year 2$ 3. Determine depreciation expense for year 3$ For Activitv hasad. 4. Determine depreciation expense for year 3$ 5. Determine Book value at the end of year 3$