Andy has a bag that contains 5 red marbles and 10 blue marbles. he pulls one marble out at random, sets it aside, and then pulls out another. what is the probability that both marbles are red?

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.