F(x+2)-2 is the correct answer. I got it right on my test. Just make sure the point passing through is -1,-2 or you will miss this question. Hope I help you all.
Only two triangles: The 90* angle is stable, so you can change only the position of the 50* and 40* angles. 1 triangle: 40* is right to the 90* 2 triangle: 40* is left to the 90*
