need help with this question please.

3. Given the following cash flows, calculate the payback, NPV @10%, IRR, and MIRR if the RR is 2% Time Period FV of CFs @ 2% year 1 Year 2 year 3 CF -$60,000 +$22,000 +$25,000 +$70,000 Payback NPV @ 10% IRR MIRR with RR = 2% 3.a If prices are expected to increase by 3% per year, how much do you need in your retirement account if you want $3,000 per month in today's dollars, you expect to retire in 35 years, the rate of return on your retirement account is 9% and you want to receive money from your account for 25 years after you retire? Also, how much do you need to save each month for the next 35 years so that you can have the amount you need