Delta Air Lines, Incorporated, and Southwest Airlines Company are two publicly traded airline companies. They reported the following in their financial statements (in millions of dollars, except per-share amounts and stock prices): Required: 1-a. Compute the 2018 ROE for each company. Express ROE as a percentage. TIP: Remember the bottom of the ROE ratio uses the average stockholders' equity. 1-b. Which company appears to generate greater returns on stockholders' equity in 2018 ? 2-a. Compute the 2018P/E ratio for each company. 2-b. Which company do investors appear to value more? Complete this question by entering your answers in the tabs below. Compute the 2018 ROE for each company. Express ROE as a percentage. TIP: Remember the bottom of the ROE ratio uses the average stockholders' equity. (Do not round your intermediate calculations. Round your answers to 1 decimal place.) Complete this question by entering your answers in the tabs below. Which company appears to generate greater returns on stockholders' equity in 2018? Complete this question by entering your answers in the tabs below. Compute the 2018P/E ratio for each company. (Round your answers to 2 decimal places.) 1-b. Which company appears to generate greater returns on stockholders' equity in 2018 ? 2-a. Compute the 2018P/E ratio for each company. 2-b. Which company do investors appear to value more? Complete this question by entering your answers in the tabs below. Which company do investors appear to value more