For f(x) = x2 + 8 and g(x) = vx -3, find the following composite functions and state the domain of each. (a) fog (b) gof (c) fof (d) gog (a) (f o g)(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. Simplify your answer, Use integers or fractions for any numbers in the expression.) O B. The domain of fog is all real numbers. (b) (g . f) (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. Simplify your answer. Use integers or fractions for any numbers in the expression.) OB. The domain of g of is all real numbers. (c) (f o f) (x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice