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Analysis and Interpretation of Profitability Ralance sheets and income statements for Costen Wholecale Corporation follow. Costco Wholesale Corporation Consolidated Balance Sheets (\$ millions, except par value and share data) September 2, 2018 September 3, 2017 Current assets (b) Compute net operating assets (NOA) for 2018 and 2017. (c) Compute Costco's RNOA, net operating profit margin (NOPM) and net operating asset turnover (NOAT) for 2018. (d) Compute net nonoperating obligations (NNO) for 2018 and 2017. Confirm the relation: NOA = NNO + Total equity. Analysis and Interpretation of Profitability Ralance sheets and income statements for Costen Wholecale Corporation follow. Costco Wholesale Corporation Consolidated Balance Sheets (\$ millions, except par value and share data) September 2, 2018 September 3, 2017 Current assets (b) Compute net operating assets (NOA) for 2018 and 2017. (c) Compute Costco's RNOA, net operating profit margin (NOPM) and net operating asset turnover (NOAT) for 2018. (d) Compute net nonoperating obligations (NNO) for 2018 and 2017. Confirm the relation: NOA = NNO + Total equity