Answer:
a.What are its coupon rate and yield to maturity?
The coupon rate it's 8%. and the yield to maturity it's 8,31%.
b.If Circular wants to issue a new 6-year bond at face value, what coupon rate must the bond offer?
A coupon rate of 8,19%.
Explanation:
The coupon rate it's 8% this is $80 at the price of $1,000, and the yield to maturity it's 8,31% which is the $80 received from the cupoun rate of $986 as price plus the $1,000 at the maturity.
If the company wants to offer a bond at the face value of $1,000 it's needed to offer a coupon rate of 8,19%, which arise from the value that the bond holder get today with the actual price.