Income Statement Ratio The income statement of Ivy Enterprises shows operating revenues of $197,000, selling expenses of $48,300, general and administrative expenses of $45,940, interest expense of $710, and income tax expense of $22,856. Ivy's stockholders' equity was $300,000 at the beginning of the year and $340,000 at the end of the year. The company has 35,000 shares of stock outstanding at the end of the year. Required: Ivy's profit margin is ____ should be used: and is a good indicator of its profitability. For the calculation of its profit margin to be useful, two key factors ___and____