A company that makes hair-care products had 3,000 people try a new shampoo. Of the 3,000 people, 6 had a mild allergic reaction. What percent of the people had a mild allergic reaction? (please help a girl out im so stuck)

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 volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Will gve pints stars and brainliest