Having issues with this exercise. Need further guidance.

Assume you have $10,000 to invest in the stock market. Identify 3 or 4 financial ratios that you think would help you analyze a company for the purpose of making this investment decision. Explain how to calculate the ratios and how you would use each of the ratios to make your investment decision. Your paper should be at least 200 words. You should use the information in Chapter 16 of principlesofaccounting.com http://www.principlesfaccounting.com/chapter16.htm