The average price of a gallon of gas in 2018 increased $0.30 (12.4 percent) from $2.42 in 2017 to $2.72 in 2018. Let's see whether these changes are reflected in the income statement of Chevron Corporation for the year ended December 31, 2018 (amounts in billions). Revenues Costs of Purchased Crude Oil and Products Other Operating Costs Income before Income Tax Expense Income Tax Expense Net Income 2018 $ 166 2017 $ 142 95 76 50 57 21 9 6 - $ 15 $ 9 Required: 1. Compute the gross profit percentage for each year. Assuming that the change from 2017 to 2018 is the beginning of a sustained trend, is Chevron likely to earn more or less gross profit from each dollar of sales in 2019? 2. Compute the net profit margin for each year. Did Chevron do a better or worse job of controlling expenses other than the costs of crude oil and products in 2018 relative to 2017. 3. Chevron reported average net fixed assets of $342 billion in 2018 and $340 billion in 2017. Compute the fixed asset turnover ratios for both years. Did the company better utilize its investment in fixed assets to generate revenues in 2018 or 2017? 4. Chevron reported average stockholders' equity of $152 billion in 2018 and $148 billion in 2017. The company has not issued preferred stock. Compute the return on equity ratios for both years. Did the company generate greater returns for stockholders in 2018 or 2017? Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Required 4 3-a. Chevron reported average net fixed assets of $342 billion in 2018 and $340 billion in 2017. Compute the fixed asset turnover ratios for both years. (Round your answers to 2 decimal places.) 3-b. Did the company better utilize its investment in fixed assets to generate revenues in 2018 or 2017? 3-a. 2017 3-a. 2018 3-b. Investment better utilized in 2018 or 2017? Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Required 4 4-a. Chevron reported average stockholders' equity of $152 billion in 2018 and $148 billion in 2017. The company has not issued preferred stock. Compute the return on equity ratios for both years. (Round percentage values to 1 decimal place.) 4-b. Did the company generate greater returns for stockholders in 2018 or 2017? 4-a. 2017 4-a. 2018 4-b. Greater returns generated in 2018 or 2017? % % Vertical analysis: Multiple Choice identifies, typically as a percentage, the relative contribution made by each financial statement line item. provides an understanding of the relationships among various items on financial statements by expressing the differences in terms of dollars. is used to identify trends over time. involves comparing amounts across different financial statements