Dion predicted that he would sell 87 art prints. he actually sold 100 art prints. what are the values of a and b in the table below? percent error item approximate value exact value error absolute error ratio percent error art prints 87 100 a b

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?