Question 395326
If y > 1/3, then BC = 5y + 3 > 3y - 1 = AC.  Hence A is the midpoint.  Then BC = 2(AC) <==> 5y + 3 = 2(3y - 1) <==> 5y + 3 = 6y - 2
==> y = 5.
==> Segment BC = 28.