please I need the ones mark in x. thank you

Analyzing Segment Disclosures Raytheon Company disclosed the following data related to segment sales and operating profits for fiscal 2018. Total Net Sales Operating Income $ millions 2018 2017 2016 2018 2017 2016 Integrated defense systems 55.809 55,456 55,197 $952 5879 5913 Intelligence information and services 6.722 5.806 5.799 506 428 439 Missile systems 8,298 7.320 6,670 973 1,010 921 Space and airborne systems 6.343 6,044 5.811 831 810 760 Forcepoint 596 572 551 5 31 85 Eliminations (1,423) (1.338) (1.279) Total net sales $26,345 $23.860 $22.749 The company also reported the following on its balance sheet. S millions 2018 2017 Receivables 51,549 51,245 * (net of allowance for doubtful accounts of $12 and $8) Required a. Which segment is largest in 2018? Missile Systems b. Calculate the operating profit margin for each segment and determine which segment is most profitable in 2018 by this measure. Note: Round percentage to one decimal place (for example, enter 6.7% for 6.655596). Operating Profit Margin Integrated Defense Systems 10% X Intelligence Information and Services Missile Systems 5% X Space and Airborne Systems 74 X Forcepoint Most profitable segment Integrated Defense Systems c. Which segment's sales grew the most in 2018? How does this compare to 2017 sales growth? Note: Round percentage to one decimal place (for example, enter 6.7% for 6.6555%). 2018 Growth % 2017 Growth % 20% X 10% * Segment with the most growth in 2018: Missile Systems d. Calculate the company's accounts receivable turnover and its days sales outstanding (DSO) for 2018. Note: Round amount your final answer) to one decimal place (for example, enter 6.8 for 6.77555). AR turnover DSO 20 x 20 X e. Assess the size of the receivables allowance. Note: Round percentage to one decimal place (for example, enter 6.7% for 6.65559). 2017 2018 2% X Allowance as % of AR gross 20% X