If f(x)=7x+6 and g(y)=3y^2+ 5y-8 then g(f(x))  Choose the correct choice: A) 96x^2+78x+74 B) 857x^2+99x+89 C) 852x^2+96x+87 D) 147x^2+119x+58 E) 852x^2+69x+98
g(f(x))=3(7x+6)^2+5(7x+6)-8   =3(49x^2+36+84x)+35x+30-8   =147x^2+119x+58   the answer is 147x^2+119x+58
<result>D</result>
If f(x)=7x+6 and g(y)=3y^2+ 5y-8 then g(f(x))