suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. you return the first marble to the bag and then choose again. find p(red then blue).

Luigi is the first person to finish a 5k race and is standing 13 feet beyond the finish line. another runner, mario, is still running the race and has approximately 24 feet before he reaches the finish line. what is the distance between mario and luigi? explain through words, numbers or pictures how you found the answer.