(a) fog (b) gof (c) fof (d) gog (a)(1)(x) ATL (Simplify your answer.) The domain of fog is [4,00). (Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Sir your answer.) 2 (b) (gof)(x)=x +2 (Simplify your answer.) The domain of gofis (-0,00). (Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Sim your answer.) (c) (fof)(x) = x+1242 +42 (Simplify your answer.) The domain of f of is (-0,00). (Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Simp your answer.) (d) (gog)(x)= (Simplify your answer.)