DETERMINE THE DOMAIN FOR EACH FUNCTION - IS THIS ANSWER CORRECT?

Given f(x) = x - 9 and g(x) = 3x2, first find f + 9, f-g, fg, and . Then determine the domain for each function. (f+ 9)(x) = 3x2 + x-9 (Simplify your answer.) What is the domain of f + g? OA. (- 00, 2 )U 2:00 OB. (- 00,00) O c. 2,00 O D. [0,00) (f-9)(x) = -3x2+ x-9 (Simplify your answer.) What is the domain of f - g? O A. (-4,00) O B. [0,00) O c. (-00,00) OD. (-00, - 4)U( -4,00) (fg)(x) = 3x3 -27x2 (Simplify your answer.) What is the domain of fg? O A. (- 00, 1)U(1,00) O B. (- 00,9)U(9,00) O c. (-00,00) OD. [0,00) : ()= x - 9 3x 2 (Simplify your answer.) What is the domain of ~? O A. [0,00) O B. (1,00) O c. (-00,0) U(0,00) OD. (- 00,00)