1Consider the functions f(x) = 7x ? 6 and g(x) = (x + 6).(a) Find f(g(x)).(b) Find g(f(x)).(c) Determine whether the functions f and g are inverses of each other.(a) What is f(g(x))?f(g(x)) =(Simplify your answer.)Give any values of x that need to be excluded from f(g(x)). Select the correct choice below and fill in any answer boxes within your choice.OA. x#(Use a comma to separate answers as needed.)OB. No values should be excluded from the domain.(b) What is g(f(x))?g(f(x)) =(Simplify your answer.)Give any values of x that need to be excluded from g(f(x)). Select the correct choice below and fill in any answer boxes within your choice.OA. x#(Use a comma to separate answers as needed.)OR No values should be excluded from the domain