What is the value of a bond that has an annual coupon of 12%, a maturity of 5 years and the market yield is currently at 8%?

What is the value of a bond that has an annual coupon of 7%, a maturity of 10 years and the market yield is currently at 8%?

What is the value of a bond that has an annual coupon of 8%, a maturity of 15 years and the market yield is currently at 8%?

What is the value of a bond that has an annual coupon of 9%, a maturity of 20 years and the market yield is currently at 8%?

What is the interest on a $1,000 zero coupon bond with a yield of 6.75% for 2 years?

What is the yield of a $1,000 zero coupon bond maturing in 3 years purchased at $834.887?