which of the following is equivalent to 4x-8y=20 A. y=1/2x-5/2 B. y=-1/2x+5/2 C. y=-1/2x-20/8 D. y=1/2x+5/4

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.)

How can you tell when x and y are not directly proportional?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?