Nick bought a multi-room air conditioner at a sale price of $340. The original price of the air conditioner was $400. Give your answer as a percentage.

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.)

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

Which of the following vectors are orthogonal to (2,1)? check all that apply