Compute the DuPont Disaggregation of ROE Refer to the balance sheets and income statement below for Facebook Inc. FACEBOOK INC. Consolidated Statement of Income For Year Ended December 31, $ millions 2018 Revenue $53,325 Costs and expenses Cost of revenue 9,355 Research and development 10,273 Marketing and sales 7,846 General and administrative 3,451 Total costs and expenses 30,925 22,400 Income from operations Interest and other income (expense), net Income before provision for income taxes 448 Provision for income taxes Net income 22,848 3,249 $19,599