Apple is deciding whether or not to purchase Sony. Sony's financials are 30% debt and 70% equity. The debt/equity ratio for which Apple will use for this purchase is 2:1. If Sony has a equity beta of 1.3 and the cost of debt is expected to be 13%, what is the WACC apple should use for this purchase? The corporate tax rate is 25%, the expected market risk premium is 6%, and the risk-free rate is 3%.