first, find the intersections of the parabolas using any method. i choose to use the elimination method
next, find the distance between the intersected points (3, -1) & (-1, 2):
i don't know the options but all you have to do is:
1 - first we sum our expression:
84 + 16 = 100
2 - secondly, we calculate our options and find the one that equals 100.
hope it ,