Subtract (2x3 + 9x − 8) − (4x2 − 15x + 7).

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Explain how you can use the associative property to evaluate (7x50)x4.

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?