please answer all 3 it will be great help

yu deposit $100 at the begenning of each month for 5 years in an account paying 4.2%compounded monthly. what will the balance be at the end of the 5 years?(do not include $sign, round to 2 decimal places) * Your answer This is a required question what semi annual payment musy be made into a fund at the begenning of 3pa every 6 months to accomulate to $9600 in 10 years at 7% compounded semi annually?(round to 2 decimal places, do not include $ sign) Your answer This is a required question For how long can you withdraw $500 at the begenning of every three months from a fund of$10000 if the interest rate is 10% compounded quarterly?(type the number only-round to a whole number)