Abag of marbles has 5 green, 2 yellow, 8 red, and 3 purple marbles. what is the probability of picking a red marble, not replacing it, and then picking another red marble?

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Barrett is comparing the membership fees for two museums. the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?

The number of students who ride a school bus is 110% of the number of students who walk. how many students ride the school bus?