Use the following information to answer the Questions 4, 5 and 6 Suppose you are replacing a machine that you bought five years ago for $100,000. You were depreciating this old machine using straight-line depreciation over ten years. If you replace it with a new machine that costs $80,000 and is depreciated over eight years, if the firm's tax rate is 40% 4. calculate the depreciation tax-shield on the old machine: 5. calculate the depreciation tax-shield on the new machine: 6. calculate the cash flows from change in depreciation: