(Cost of debf) The Zephyr Corporation is contemplating a new investment to be financed 33 porcent from debt. The fim could sell now $1,000 par value bonds at a net price of $920. The covpon interest rate is 13 percent, and the bonds would mature in 19 years. If the compary is in a 20 percons tax bracket, what is the ather tax cost of capital to Zephyr for bonds? The aften tax cost of copial to Zephyr for bonds is 8. (Round to two decimal places.)