Time Value of Money

please show work!

1. What would your investment account be worth in 23 years if you currently have $7,000 saved and plan to add $240 per month at the end of the month for the 23 years if the account pays 6% interest compounded monthly? 2. What is the future value of an $800 annuity payment over 10 years if the interest rates are 6 percent? 3. What is the present value of a $400 annuity payment over 5 years if interest rates are 6 percent