Question 7546
If {{{f(x)= 5x+7}}} and {{{g(x) = x^2+7}}} Then g o f is g(f(x)).

{{{g(f(x)) = g(5x+7)}}} = {{{(5x+7)^2 + 7}}} = {{{(25x^2 + 70x + 49) + 7}}}= {{{25x^2 + 70x + 56}}}