Which of the following orderd pairs is a solution of 3x+2y=-19
7,-1
6,-7
-6,-7
-7,1

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?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?