Here is some information about Stokenchurch Incorporated:

Beta of common stock $=1\mathrm{.}5$

Treasury bill rate $=4\%$

Market risk premium $=6\mathrm{.}8\%$

Yield to maturity on long$-$term debt $=9\%$

Book value of equity $=$ $$370$ million

Market value of equity $=$ $$740$ million

Long$-$term debt outstanding $=$ $$740$ million

Corporate tax rate $=21\%$

What is the company$$s WACC?