Consider functions f and g.
f(x) = x² + 7x
g(x) = 3x - 1
What is the value of (fog)(x)?
O A.
O B.
O C.
O D.
3x² + 21x + 1
3x² + 7x - 1
92² + 21r - 1
9x² + 15 - 6