Toby, Elisa, and Heidi each spent between $10 and $12 on fruit. Toby bought 6 items. Elisa bought 3 items. Heidi bought 4 items. The prices of the items are given below. Drag items to the box under each person's name to show what they could have bought.

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min