[Caroline]

If there is a fixed number of boxes in your scoring zone, if you plot the possible scores using the number stacked as the X component and the total score as the y component, it forms a parabola.

For instance, if you have 8 boxes in your area:

(stacked, score)
(1, 7)
(2, 12)
(3, 15)
(4, 16)
(5, 15)
(6, 12)
(7, 7)
(8,0)

It forms a parabola. In this situation, the equation is y=(-x)(x-8)