Evaluating Equations:The party planning committee has to determine the number of table can fit 8 people and a round table can fit 6 people, the equation 150=8x+6y represent the number of each type of table needed for 150 people

Which of the following expressions are equivalent ?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

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?