Need help with these 3 questions

Norfolk State University, Department Engineering EEN 311 Engineering of Problem 4: Draw the cash now that represents following cash flows S100 two years ago is equival to si44 agram the in the future? ent now at 20% per year compound interest, find the equivalent three years Solution: Problem 5: How much can you borrow today if you promise to repay s20,000 two years from today at a compound interest rate of 20% per year? Solution: Problem 6: A corporation requires a minimum rate of retum of 5% on its invested capital. The a cost of capital is currently averaging 4% per year. If a specific project is expected to result in 75% per year rate of return, is it economically justified when compared with the MARR? Solution