Need help with a, b, and f please.

Analysis and Interpretation of Profitability Balance sheets and income statements for Costco Wholesale Corporation follow. Costco Wholesale Corporation Consolidated Statements of Earnings For Fiscal Years Ended ($ millions) September 2, 2018 Total revenue $141,576 Operating expenses Merchandise costs 123,152 Selling, general and administrative 13,876 Preopening expenses 68 Operating Income 4,480 Other income (expense) Interest expense 159 Interest income and other, net (121) Income before income taxes 4,442 Provision for income taxes 1,263 Net income including noncontrolling interests 3,179 Net income attributable to noncontrolling interests (45) Net income attributable to Costco $3,134 Costco Wholesale Corporation Consolidated Balance Sheets ($ millions, except par value and share data) September 2, 2018 September 3, 2017 Current assets Cash and cash equivalents $6,055 $4,546 Short-term investments 1,204 1,233 Receivables, net 1,669 1,432 Merchandise inventories 11,040 9,834 Other current assets 321 272 Total current assets Net property and equipment Other assets 20,289 19,681 17,317 18,161 860 869 Total assets $40,830 $36,347 Current liabilities Accounts payable $9,608 2,703 Accrued salaries and benefits 961 Accrued member rewards Deferred membership fees Other current liabilities $11,237 2,994 1,057 1,624 3,014 19,926 6,487 1,314 27,727 Total current liabilities Long-term debt Other liabilities 1,498 2,725 17,495 6,573 1,200 25,268 0 0 4 4 Total liabilities Equity Preferred stock, $0.01 par value: Common stock, $0.01 par value: Additional paid-in-capital Accumulated other comprehensive loss Retained earnings Total Costco stockholders' equity Noncontrolling interests Total equity Total liabilities and equity 6,107 (1,199) 7,887 5,800 (1,014) 5,988 10,778 12,799 304 301 13,103 $40,830 11,079 $36,347 (a) Compute net operating profit after tax (NOPATI 1or 2018. Assume that the combined federal and state statutory tax rate is 22%. (Round your answer to the nearest whole number.) 2018 NOPAT = 3,494.4 X ($ millions) (b) Compute net operating assets (NOA) for 2018 and 2017 2016 NOA = 11,873 * $ millions) 2017 NOA = 12,331 x ($ millions) (0) Compute Costco's RNOA, net operating profit margin (NOPM) and net operating asset turnover (NOAT) for 2018. (Do not round until final answer. Round two decimal places. Do not use NOPY X NOAT to calculate RNOA. 2018 RNOA = 26.51 2018 NOPM = 2.27 2018 NOAT = 11.7 (d) Compute net nonoperating obligations (NNO) for 2018 and 2017. Confirm the relation: NOA = NNO + Total equity. 2018 NNO = (772) ($ millions) 2017 NNO - 794 ($ millions) (e) Compute return on equity (ROE) for 2018. (Round your answers to two decimal places. Do not round until your final answer.) 2018 ROE = 26.59 (f) Infer the nonoperating return component of ROE for 2018. Use answers from above to calculate. Round your answer to two decimal places.) 0.08 XW