If f(x) = x^2 - 3 and g(x) = 2x + 1, what is (f o g)(x)?
✓ Correct Answer: Option C
Substitute g(x) into f(x) to get f(2x+1). Expand (2x+1)^2 to 4x^2 + 4x + 1, then subtract 3 to get 4x^2 + 4x - 2.
Substitute g(x) into f(x) to get f(2x+1). Expand (2x+1)^2 to 4x^2 + 4x + 1, then subtract 3 to get 4x^2 + 4x - 2.