This question is fairly easy and ill mark question is in the picture !

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.)

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Which function has the domain x> -11