Chapter Four: Project on Investigating Alcoa Go to Alcoa.com and select About at the top of the page. Under Investors at the top of the page Select SEC Filings and 10-K for year ending 2020. Answer the following question and show any calculations. https://d18mn0p25nwr6d.cloudfront.net/CIK-0001675149/7a986f14-b400-4e99-8b45-6c1 874811787.pdf 1. Calculate the debt to assets ratio for Alcoa for the last two years. Note: Total = liabilities Total liabilities and stockholders' equity-Stockholders' equity. What does this mean? (Page 55) In 2019 their debt to asset ratio was 59, 8745/14631 In 2018 their debt to asset ratio was 53, 8544/16142 b. Calculate the return on equity for the last two years. What does this mean? 853/5886= 893/7598= c. Calculate the return on assets for the last two years. What does this mean?