Need help answering all the requirements for this question!!!

Homework: CH 12 HW Score: 0 of 4 pts 5 of 6 (2 complete) P12-37B (similar to) Net sales, net income, and total assets for Alexander Construction, Inc., for a four-year period follow: E (Click the icon to view the data.) Read the requirements Requirement 1. Compute trend percentages for each item for 2015 through 2018. Use 2015 as the base year. (Round to the nearest whole percent, X%.) Alexander Construction, Inc. - Trend Percentages Requirements 2018 2017 2016 2015 Net sales % Net income 1. Compute trend percentages for each item for 2015 through 2018. Use 2015 as the base year. Total assets 2. Compute the return on assets for 2016, 2017, and 2018. Round your answers to three decimal places. 3. Alexander Construction's main competitor had a return on assets of just under 40 percent for the years 2016, 2017, and 2018. How does Alexander Construction, Inc.'s return on assets compare with that of its main competitor? Data Table Print Done 2018 2017 2016 2015 $ 384.000 S 360.000 S 328.000 S 331.000 Net sales 92,000 76,000 Net income 123,000 75,000 256,000 204,000 Ending total assets 288,000 238,000 Print Done