Need help with #5 please

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?

Find the average rate of change for the given function drom x=1 to x=2