The document discusses key financial ratios used to measure profitability and efficiency. Return on Equity (ROE) measures profitability by dividing net income by average shareholders' equity. ROE is impacted by the net margin, asset turnover ratio, and equity multiplier. The net margin measures profitability as a percentage of revenue. The asset turnover ratio measures efficiency in generating revenue from assets. The equity multiplier shows how assets are financed by equity or debt.