Marc is considering purchasing a new point-of-sale computer system for his store. The computer system will allow cashiers to process sales and retums quicker, plus it will easily integrate with his inventory management system. The new computer system will cost Marc $20,000 to purchase and setup. The expected net cash flow from savings is shown below. Using the payback method, in what year will Marc recover his investment? Do not enter dollar signs or commas in the input boxes. Use the negative sign for negative values. Year the investment is recovered