compute how much money you need to invest today in order to be able to have retirement income of $42,000 per year for u+2 years if you can earn 6.22% per year and if you plan to retire in 40 years?

compute how much money you need to invest today in order to be able to have retirement income of $3500 per month for u+28 months if you can earn 6.22% per year and if you plan to retire in 40 years?

u=12