Answer
8.9 miles
Work Step by Step
Given Elm $(-3,-6)$ and Symphony $(1,2)$
Use the distance formula:
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
$d=\sqrt{(1-(-3))^2+(2-(-6))^2}$
$d=\sqrt{(4)^2+(8)^2}$
$d=\sqrt{16+64}$
$d=\sqrt{80}$
$d\approx8.9$