Please answer both :)

24) Assume that 15 years from today you will receive a one-time cash flow of $250,000. What is the present value of that cash flow? Assume that the interest rate is 9% compounded annually. 23) Calculate the Present Value (the value today) of the following cash flows: Cash flow 1 year from today = $50 Cash flow 2 years from today = $60 Cash flow 3 years from today = $70 Cash flow 4 years from today = $200 Assume an interest rate (rate of return) of 10%, compounded annually. a. $284.23 b. $484.23 c. $84.23 d. $180.00 e. 10%