Question 1078219
{{{f(g)=g^2+g}}}
{{{f(g)=(x-3)^2+(x-3)}}}
{{{f(g)=(x-3)(1+x-3)}}}
{{{f(g)=(x-3)(x-2)}}}
{{{f(g(7))=(7-3)(7-2)}}}
{{{f(g(7))=4*5}}}
Work that out for the final answer.