In problems 11-15, for the given functions f and g find the domain of (f o g) (x)

x+4 In problems 11-15, for the given functions f and g, find the domain of (f . g) (x) 11. f(x) = 2x; g(x) = 3x2 + 1 12. f(x) = 4x -3; 8(x) = 3 -5x2 13. f(x) = 2x + 3; g(x) = 4x - 2 14. f(x) = x-3 g(x) = 2x - 1 15 . f (x ) = : 8 (x) = 1 x+4