Harper Company is considering purchasing a new piece of equipment for $140,000. The equipment has a 10-year useful life and a zero salvage value. Using the equipment is expected to generate cost savings of $24,800 each year. The company's cost of capital is 10%. 1. The payback period on the equipment is years (round to 2 decimal places). 2. The ROI (return on investment) is 3. The Net Present Value is 4. The Internal Rate of Return (IRR) is