6. Use the information below to calculate the ROE for Vandelay Industries using the following interest rates (cost of debt). SHOW YOUR WORK. (3 pts. each) a. 6% b. 8% c. 10% d. 12% Vandelay Industries Information Total Assets: 1,000,000 Debt-to-Equity Ratio (D/E): 1.5 ROA: 10% 7. What are the interpretations of the "operational ratios?" What is the sum of the operational ratios and why must this be the case? (8 pts.) (More) Extra credit: Given the relationship between ROA, ROE, and interest rates (the cost of debt), why would a business ever choose to use debt financing if interest rates were greater than their expected ROA? (up to 3 points)