please help me with these problems!

11- If Kelley had deposited $7,000 at 7% compounded semiannually and it grew to $21,046.95, how long was it on deposit? 12. Five years from today, Stephanie plans to take a European vacation that will cost $9,000. She consults you, her banker, about methods of providing for the trip Among your many plans, you explain to her that she can deposit a single amount today and allow it to collect interest for five years so that the account equals $9,000 at the end of the five years. Assuming.that your bank pays -percent interest rate compounded semiannually, how much must Stephanie deposit now? 13. Find the compound value of the following ten-year series of cash flows if the flows are invested at 12 percent annual interest. 0 200 200 200 0200 200 200 200 200 200 to t4 14. A father is planning to provide a 10-year trust fund for his son Gabriel. The amount deposited today will remain untouched until the end of the 10th year, but will gain interest at a rate of 10 percent compounded annually. The money will then be transferred to another account, which pays 5 percent. The intent is that Gabriel will withdraw the money in four equal annual payments of $5,000 each beginning at the end of year 10. The fund, which will help to pay for his higher education will be completely depleted after four payments. What amount should Gabriel's father deposit today? 5k 5k ik 5k to 10 12 13 15. Jeff and Teara Rubysam need to take out a loan for $7,000. If their bank agrees to lend them the money at 8% per annum and they make 5 annual payments beginning one year from the lending date, what is the amount of each payment. Prepare an amortization schedule to show the loan payoff schedule