please help with questions 1&2. will upvote quickly

QUESTION 1 Suppose a firm has a capital structure with 40% debt and faces a 35.2% tax rate. If the required return on debt is 7.7 % and the required return on equity is 12.5, what is the WACC? Answer in percent e.g., 11 instead of 11 QUESTION 2 Suppose a firm has a capital structure with 45 % debt and faces a 35% tax rate. If the required return return on equity is 16.8, what is the WACC? Answer in percent e.g., 11 instead of .11 on debt is 5.5% and the required QUESTION 3