A bag contains 4 blue marbles, 5 yellow marbles, and 2 green marbles. What is the probability of selecting a blue or green marble? (Express your answer as a decimal)
ANNSWER - .545 EXPLANATION - all together there are 11 marbles, green and blue make up 6 of those. so you put 6 over 11 and then covert to a decimal which comes out as .545
