For f(x) = 3x + 5 and g(x) = 6x, find the following composite functions and state the domain of each. (a) fog (b) gof (c) fof (d) gog (a) (fog)(x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. O A. The domain of fog is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a com O B. The domain of fog is all real numbers. (b) (g of ) (x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. O A. The domain of g of is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a comm O B. The domain of g of is all real numbers. (c) (f of) (x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. O A. The domain of f of is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a comm O B. The domain of f of is all real numbers. (d) (go g)(x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. O A. The domain of gog is