please do 3-7

3) $800 is invested at 6%, and it is compounded annually. What is the amount in the account at P- 800 the end of four years? T= 4yrs 4) How much should Jack invest at 8%, compounded quarterly, so that he will have $5,000 at the end of seven years? 5) Your client wishes to buy an investment that pays 6%, compounded semiannually. He wants $25,000 when he retires in 15 years. How much should he invest? ing 6) Find the balance if $1000 is invested at an annual interest rate of 10% for 2 years compounded. Which compounding period will be best for your client? a. annually b. daily c. hourly 7) Calculate the present value of $10,000 payable in 5 years at 4% interest compounded semiannually