Posters.com is a small Internet retailer of high-quality posters. The company has $730,000 in operating assets and fixed expenses of $168,000 per year. With this level of operating assets and fixed expenses, the company can support sales of up to $4,900,000 per year. The company's contribution margin ratio is 12%, which means that an additional dollar of sales results in additional contribution margin, and net operating income, of 12 cents. Required: Complete the following table showing the relation between sales and return on investment (ROI). (Round your percentage answers to 2 decimal places (i.e., 0.1234 should be entered as 12.34).) What happens to the company's return on investment (ROI) as sales increase? Increases Decreases