Comets orbit the sun. One travels 30,000 mph the other comet travels 28,500 mph. What is the most efficient way to calculate differences of the distance traveled by the comments for any given number of minutes? Hustify your answer

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.)

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)