For this question pertaining to estimating cost of debt captial, please let me know where I went wrong with my answers. Please solve the problem in its entirity and show your steps to your calculations.

QUESTION 4 Partially correct 033 points out of 1.00 PFlag question Estimating Cost of Debt Capital Assume the December 31, 2010, partial financial statements taken from the annual report for AT&T (T) follow. Consolidated Statements of Income Dollars in millions 2010 Operating revenues Wireless service Voice Data Directory Other Total operating revenues 53,510 28,315 27,479 3,935 11,041