2x(4x2-10) ^3 multiply within the parentheses

The circumference of a circle is 5 pi cm. what is the area of the circle?

Which of the following points is collinear with (-2,1) and (0,3)

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?