7. A box contains 5 balls. Two are numbered '7', two are numbered '8', and one ball is numbered '9'.
Create the probability distribution for drawing a ball and writing down the number on the ball.
7
248
19
x
P(X)
7a. What is the expected value for the number on the ball?

The change in water level of a lake is modeled by a polynomial function, w(x). described how to find the x-intercepts of w(x) and how to construct a rough graph of w(x) so that the parks department can predict when there will be no chage in the water level. you may create a sample polynomial of degree 3 or higher to use in your explanations.