If $f(x)=2x+3$ and $g(x)=x^{3}$ then find $gof$

Question

If $f(x)=2x+3$ and $g(x)=x^{3}$ then find $gof$

Accepted Answer

$(2x+3)^{3}$

Answer

$2x^{3}+3$

Answer

$2x^{3}$

Answer

None of these