dayonajones68ow65mb dayonajones68ow65mb 21-10-2018 Mathematics contestada Which expression is equal to ( f o g)(x)? f(x)= x^2 +3 ; g(x)=6x A. 6x^2 +3 B. 6x^3 + 18x C. 36x^2 + 3 D. 36x ^2 + 18