HELP A GIRL OUT!! ILL GIVE EXTRA POINTS IF YOU CAN DO THESE<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?

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

Is the power produced directly proportional to the wind speed, give reasons for your answer?