Ravi is on the swim team. Each week he swims a total of 9,000 meters. How many kilometers does he swim each week? Be sure to include the correct unit in your answer.

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?