Determine the following for Straight-line, Double Declining Balance, and Activity Based depreciation. T Corporation purchased equipment for $500,000. The company estimated the residual value to be $60,000 at the end of the estimated 8 years or 17,600 hours service life. For Straight-line: 1. Book value at the end of year 3$ For Double declining balance: 2. Depreciation expense for year 2$ 3. Depreciation expense for year 3$ For Activitv based: 4. Depreciation expense for year 3$ 5. Book value at the end of year 3