calulate the WACC, cost of equity, cost of debt and debt to equity ratio.

Cost of equity Cost of debt 14 15 Norfolk Southern 16 5 year Beta as of 9/30/15 17 5 year treasury yield 18 Total debt as of 12/31/15 19 Total equity as of 12/31/15 20 Avg market return 2015 21 Interest expense 22 Tax rate 23 Debt to equity ratio 24 Market risk premium 1.13 1.67 21,398 12,129 9.40% 532 37% 9.4-1.6=7.73%