I need assistance figuring out these parts of the question. Thank you!

Solano Company has sales of $780,000, cost of goods sold of $510,000, other operating expenses of $38,000, average invested assets of $2,300,000, and a hurdle rate of 12 percent. Required: 1. Determine Solano's return on investment (ROI), investment turnover, profit margin, and residual income. (Do not round your intermediate calculations. Enter your ROI and Profit Margin percentage answer to the nearest 2 decimal places, (i.e., 0.1234 should be entered as 12.34%). Round your Investment Turnover answer to 4 decimal places.) Return on Investment : 0% Investment Turnover Profit Margin % Residual Income (Loss) 2. Several possible changes that Solano could face in the upcoming year follow. Determine each scenario's impact on Solano's ROI and residual income. (Note: Treat each scenario independently.) (Enter your ROI percentage answers to 2 decimal places, (i.e., 0.1234 should be entered as 12.34%.)) a. Company sales and cost of goods sold increase by 30 percent. Return on Investment Residual Income (Loss) b. Operating expenses decrease by $12,000. Return on Investment Residual Income (Loss)