Using the data for a firm shown in the following table, calculate the cost of retained earnings and the cost of new common stock using the constant-growth valuation model. NOTE: Use this information to answer questions 7 and 8. Do not enter percent signs in your answers. Round off all of your numerical responses in questions 7 and 8 to two (2) decimal points. Question 7 5 pts What is the cost of retained earnings? (Round your percent to two decimal places). Question 8 5 pts What is the cost of new common stock? (Round your percent to two decimal places.)