This Is a callable bond please show all work snd formulas pls thank you.

al Ultra 5:33 PM 10 55% A 12% bond with semi-annual coupons has face amount of $10000. The redemptin amant equals the face amount and the redemption can take place at the end of each of the dates between the end of yrs 8 and 10. The price at ; (2) - 10% Coupon n=16& (n=20 A 12% bond with semi annual coupons has face amount of $10,000. The redemption amount equals the face amount and the redemption amount can take place at the end of each of the coupon dates between the end of the yrs 8 and 10. The price at i^2 = 10% n = 16 & n = 20