Answer
$-3$
Work Step by Step
Points on the graph:
$(-2.5,2)$, so $f(-2.5)=2,$
$(1.9,-2)$, so $f(1.9)=-2,$
$(-\pi,3), $so $f(-\pi)=3,$
$(-3,2), $so $f(-3)=2,$
$(1,-2), $so $f(1)=-2$
$(\pi,-4), $so $f(\pi)=-4.$
So, we calculate
$\sqrt{2-(-2)}-(3)^{2}+2\div(-2)\times(-4)=2-9+4=-3$