Janet Adams, CFA, is reviewing Rival Company's financial statements. Rival's long-term debt
totals $35 million, while total shareholder equity equals $140 million. Rival's long-term debt has a
YTM of 9%.Rival's tax rate is 40% and its beta is 0.9. Adams gathers the following
additional facts:
Treasury bills earn 4.0%.
The equity risk premium is 4.5%.
Based on the information provided, Rival's weighted average cost of capital is closest to:

A. 4.6%.
B. 7.5%.
C. 8.2%

Weightdebt=35/（35+140）=0.2
Weightequity=140/（35+140）=0.8
WACC=(0.2*0.09*(1-04)+(0.8*(0.04+(0.9*0.0145)))=0.0752

这是给出的答案。我不能理解那个0.0145是从哪里来的？。。。。。