Which expressions are equivalent to 4a-84a−8. Select all that apply. 1.) −8+4a
2.) 8-4a8−4a
3.) 4a+-84a+−8
4.) 2(2a-4)2(2a−4)
5.) 4(a-8)4(a−8)

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.