1. Find the duration of a 7% coupon bond making annual coupon payments if it has 3 years until maturity and has a yield to maturity of 7%. What is the duration if the yield to maturity is 8.4%? Note: The face value of the bond is $1,000.
2. Find the duration of a 6.6% coupon bond making semiannually coupon payments if it has 3 years until maturity and has a yield to maturity of 6.6%. What is the duration if the yield to maturity is 9.0%?