For the quadratic equations shown here, which statement is true? A. The graphs open downward.
B. The graphs are listed from widest to narrowest.
C. The graphs are symmetric about the line y=3.
D. The graphs are symmetric about the line x=3.

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?