Diaz kindergarten class is no greater than 46 in let H the height in inches of a child in the class

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?

Asap! i'm not good math and i'm lost.

Which of the following parabolas opens down?