I just need the answer for Question 4 please.

Common stock: 100,000 shares outstanding. $40 per share, beta-1.3 Bonds: 1,000 bonds outstanding, $1,000 face value each, 6% coupon paid semiannually, 19 years to maturity, market price of $1,305 per bond. Market risk premium=4.5%, yield on 30 day Treasury Bill= .5%, marginal tax rate 34% Question 1 (0.5 points) What is Rex Inc's Weight of Debt? Question 2 (0.5 points) What is Rex Inc's Weight of Equity? Question 3 (1 point) What is Rex Inc's Before Tax Cost of Debt? Question 4 (1 point) What is Rex Inc's After Tax Cost of Debt