Use the equation of a parabola in standard form having a vertex at (0, 0), x2 = 8y. Solve the equation for "p" and then describe the focus (0, p), the directrix, and the 2 focal chord endpoints.

Elena's Daughter sold 84 boxes, 84 boxes are 5% of the number of boxes the troop sold.
There are couple ways to solve this problem, here's how I would do it:
84 = 5%
1% = ?
1% =  = 16.8
100% = 16.8 × 100
100% = 1680

The troop sold 1640 boxes of girl scout cookies.