Please only answer if youre willing to answer all parts to the question and dont say doesnt provide enough info! Makes me lose a question thanks!

Part B: Financial management Set up the formula to cakculate the net present value of the cash flows in qaestions 1 through 3, assuming a discount rate of 10% per year: 1. Receive $40 today and receive S10 one year from today 2. Receive $40 today and receive $40 three years from today. 3. Pay $30 today, pay $40 one year from now, receive $10 two years from today, and receive 100 three years from today 4. If your discount rate was 5%, would the cash flow m question 3 above look more attractive than it does with the 10% discount rate