Abathtub is draining at a constant rate. after 2 minutes, it holds 30 gallons of water. 3 minutes later, it holds 12 gallons of water. write an equation that represents the number y of gallons of water in the tub after x minutes

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Which of the following parabolas opens down?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *