rosalesriver3 rosalesriver3 22-09-2022 Mathematics contestada Question 9 of 10 If f(x) = -3 and g(x) = 3x²+x-6, find (f+ g)(x). 3x²+x-9 3x² + OA. OB. 4x²-9 OC. 3x²-x-3 D. 3x²+2x-3 SUBMI