11. A $2000 bond bearing interest at 7% payable semi-annually matures in 8 years. If it is bought to yield 5.5% compounded semi-annually, what is the purchase price of the bond?

13. A $5000, 6.5% bond with semi-annual interest coupons redeemable at par in 10 years is bought to yield 5% compounded semi-annually. Determine: (i) the premium or discount (ii) the purchase price

15. Find the future value of $11000 invested at 6.5 % compounded quarterly for 11 years

please provide hand written solution and fast please