Answer:
The correct equation is fog = 4x^2 + 18x + 17
Explanation:
In order to find fog, you need to put the g(x) equation in for x in the f(x) equation. Then simplify.
f(x) = x^2 + 3x - 1
fog = (2x + 3)^2 + 3(2x + 3) - 1
fog = (4x^2 + 12x + 9) + (6x + 9) - 1
fog = 4x^2 + 18x + 17