Neptune Corporation's bond has an 10% coupon rate, pays interest semiannually, and matures in 15 years. If the investors' annual required rate of return is 11.5%, the value of the bond is: O $894 $1,156 $925 $1,115 O $1.231 Neptune Corporation's bonds have 15 years to maturity and a coupon rate of 8%. Interest is paid semi-annually. The bonds sold at par value, but the firm paid flotation costs amounting to 3% of par value. The firm has a marginal tax rate of 21%. What is the firm's after-tax cost of debt for these bonds? 8.00% O 5.93% 6,60% 8.36% 6.38%