So the answer is G.
The “x” in f(x) and the “x” in the equation are always the same, which means that when the “x” in f(x) equals to 3, the “x” in the equation equals to 3 as well. So the equation changes to -2 x 3^2 + 3 - 5= -2 x 9 + 3 - 5=20
