Question

plss solve this question immediately

Answer 1

here is your answer hope it will help you

Answer 2

if f(x)=x+7
and g(x)=x-7
the
(f o g)(x)=f(g(x))=f(x-7)=x-7+7=7
hence fog(x)=x
so fog(7)=7
hope this helps you