ANSWER ASAP PLS

Big Door Company has 11.3 million shares outstanding, which are currently trading for about $10 per share and have a levered equity beta of 1.5. Big Door has 21,700 outstanding bonds, with a 7% coupon rate, payable semi-annually and due in 10 years. The bonds are rated BBB. Currently the credit spread for BBB is 120 basis points over equivalent-maturity Government of Canada debt. The current yield on 10-year Canada bonds is 4%, compounded semi-annually. The risk-free interest rate is 2.1%, and the market risk premium is 6.3%. The company has a 35% tax rate. (Do not round intermediate calculations.)

a. Calculate Big Door's WACC. (Round your answer to 2 decimal places.)

b. Calculate Big Door's unlevered beta, using the following formula: (Round your answer to 2 decimal places.)

c. If Big Door was 50% debt-financed, what would be its WACC? Assume that the beta of its debt is unchanged by the capital structure change. (Round your answer to 2 decimal places.)