There are 3 different questions please answer them all

Question 10) Justin is saving for his retirement 21 years from now by setting up a savings plan. He has set up a savings plan wherein he will deposit $128.00 at the end of each year for the next 10 years. Interest is 4% compounded annually. (a) How much money will be in his account on the date of his retirement? (b) How much will Justin contribute? (c) How much will be interest? Question 11) For the last four years Joe has made deposits of $400 at the end of every six months earning interest at 5% compounded semi-annually. If he leaves the accumulated balance in an account earning 7% compounded quarterly, what will the balance be in Joe's account at the end of another eight years? The balance in the account will be $ Question 12) Find the future value of the following ordinary simple annuity. Periodic Payment Conversion Payment Interval Term Interest Rate Period $765.00 1 month 7.75 years 6% monthly