What is the price of a bond with a par value of $1,000, 11 years to maturity and a 7% coupon rate with semi-annual coupon payments if the bond has a yield to maturity of 5%?

What is the price of a bond with a par value of $1,000, an 8% coupon rate paid annually, and a yield to maturity of 6% if the bond matures in 9 years?

What is the yield to maturity of a bond with a par value of $1,000, a coupon rate of 7% with annual payments, and 9 years to maturity if the bond sells for $800?