Write a function rule for the relationship between the amount of plant food remaining, f(x), and the number of days that have passed, X.
Type the correct answer in the box.

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

Which statements about these triangles is true

How to do this , and can some one explain