For f x 9x 9 and g x x find the following composite functions and state the domain of each a fog b gof c fof d gog ww a fog x 9x 9 Simplify your answer Select the correct choice below and if necessary fill in the answer box within your choice OA The domain of fog is x Type an inequality Use integers or fractions for any numbers in the expression Use a comma to separate answers as needed B The domain of f o g is all real numbers b gof x Simplify your answer