Here is some information about Stokenchurch Incorporated:

Beta of common stock $=1\mathrm{.}7$

Treasury bill rate $=4\%$

Market risk premium $=8\mathrm{.}0\%$

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

Book value of equity $=$ $$490$ million

Market value of equity $=$ $$980$ million

Long$-$term debt outstanding $=$ $$980$ million

Corporate tax rate $=21\%$

What is the company$$s WACC?

Note: Do not round intermediate calculations. Enter your answer as a percent rounded to $2$ decimal places.