I need fast help in these questions, please i have only 20 minutes, Please I need fast help

Question 37 3.5 out of 3.5 points ABC bonds sell for 5850, have a 5% coupon rate paid annually, $1,000 par value, and 8 years until maturity. What is the after-tax cost of debt for ABCs bonds if ABC has a marginal tax rate of 2096? ed ENG 1035 AN 10/13/2012 72F Rain coming ~ Question 39 What is the pre-tax equivalent yield for a municipal bond with a 4.5% yield if an investor has a tax rate of 12%