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Nucor Corporation ($ in millions) Total assets Common stockholders' equity Total debt Sales Net income Interest expense Assumed marginal income tax rate Source: Nucor Form 10-Ks for 2015-2018. Required: In the following analyses, eliminate the one-time net income effect of the Tax Cuts and Jobs Act on 2017's results. 1. Calculate Nucor's ROA for 2016, 2017, and 2018. 2. Decompose ROA into operating profit margin and asset turnover components. 3. Has Nucor's profitability changed over the three years? 4. Calculate the rate of return on common stockholders' equity for 2016, 2017, and 2018. ROA Complete this question by entering your answers in the tabs below. 2016 6.82 % 2015 $14,327.0 7,849.9 4,388.5 Required 3 2016 $15,223.5 8,254.7 4,357.1 16,208.1 900.4 169.2 0.37 Answer is complete but not entirely correct. Required 1 Required 2 Calculate Nucor's ROA for 2016, 2017, and 2018. (Do not round intermediate calculations. Round your answers to 2 decimal places.) 2017 9.59 Required 4 2017 $15,841.3 9,084.8 3,795.1 20,252.4 1,380.6 173.6 0.37 % 2018 15.32 % 2018 $17,920.6 10,202.0 4,291.1 25,067.3 2,481.1 135.5 0.23 Required 1 Required 2 Required 3 Required 4 Decompose ROA into operating profit margin and asset turnover components. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Operating profit margin Asset turnover 2016 6.21 1.10 % 2017 7.36 % 1.30 2018 10.31 % 1.48 Complete this question by entering your answers in the tabs below. Required 1 Required 2 Required 3 Answer is complete but not entirely correct. Rate of return on common stockholders' equity Required 4 Calculate the rate of return on common stockholders' equity for 2016, 2017, and 2018. (Do not round intermediate calculations. Round your answers to 2 decimal places.) 2016 11.18 % 2017 15.92 % 2018 25.73 %