Mastering Composite Functions

$g(f(x)) = 15x^2 + 18x + 9$ (correct)

$g(f(x)) = 15x^2 + 18x + 3$

$g(f(x)) = 5x^2 + 18x + 9$

$g(f(x)) = 15x^2 + 8x + 9$

$g(f(2)) = 87$

$g(f(2)) = 105$

$g(f(2)) = 99$ (correct)

$g(f(2)) = 117$

$f(g(1)) = 49$

$f(g(1)) = 33$

$f(g(1)) = 69$

$f(g(1)) = 57$ (correct)