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Solve the inequality. graph the solution. 6q< −18 the solution is .

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?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?