Complete assignment using attached Excel spreadsheet. =Section 1.7: Effect of Industry Economics on Balance Sheets: Access the investor relations or corporate information section of the websites of American Airlines, Intel, and Disney. Study the business strategies of each firm. Examine the financial ratios below and indicate which firm is likely to be American Airlines, Intel, and Disney. Explain your reasoning. =Complete Section 1.13: Exhibit 1.18 represents common-size income statements and balance sheets for seven firms that operate at various stages in the value chain for the pharmaceutical industry. These common-size statements express all amounts as a percentage of sales revenue. Exhibit 1.18 also shows the cash flow from operations to capital expenditures ratios for each firm. A dash for a particular financial statement item does not necessarily mean the amount is zero. It merely indicates that the amount is not sufficiently large for the firm to disclose it. A list of the seven companies and a brief description of their activities follow.