Need help on corporate finance ASAP )

1. Calculate the beta of firm ABC according to the information below about the returns (We realize that the accuracy of the calculation of beta based on only four-period of data will be low, but let's neglect that here). Explain the meaning of beta according to your calculation. (10 points) Firm ABC's returns 6% 15% -4.2% 9% Market returns 590 12.5% -35% 7.5% A firm has 30% equity and 70% debt and it pays 10% on its debt and 1 5% on its equity. Assume the corporate tax rate is 40%. What is the WACC for this firm? (10 points) 2