Question 1020692
{{{g(x)=7x+9}}}
{{{g(f)=7f+9=7(x-7/9)+9=7x-49/9+9=7x-49/9+81/9=7x+32/9}}}
So then,
{{{g(f(-20))=7(-20)+32/9=-140+32/9=-1260/9+32/9=-1228/9}}}