Solve for y: 9y = 36 a) y=4 b)y=12 c)y=18 d) y=9

Rewrite the following without an exponent. (5/8)-1

Which expression is equivalent to 2x^2+7x+4?

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?