Pls HELP I don’t understand:(

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?

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5