elizabethhecht288 elizabethhecht288 30-09-2021 Mathematics contestada Find (f + g)(x) for the following functions. f(x) = 6x2 + 9x + 2 g(x) = 9x + 2 A 15x2 + 11x + 2 B 6x2 + 18x + 4 C 6x2 + 18x + 2 D 15x2 + 11x + 2