Question

The change in water level of a lake is modeled by a polynomial function, W(x). Describe 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 change in the water level. You may create a sample polynomial to be used in your explanations.
@jim_thompson5910 I need help

Answer 1

set up a blank xy axis

Answer 2

it doesn't provide what x is exactly (a bit frustrating), but let's say x is the number of days

so x = 2 for instance would be 2 days have elapsed since some starting point

Answer 3

W(x) is the change in water level for any given day x

example

x = 2 which leads to W(x) = W(2)
on day 2, the change in water level is W(2)

Answer 4

W(x) will be represented by y

Answer 5

making sense so far?

Answer 6

yes :) @jim_thompson5910

Answer 7

so let's say I had this curve that represented W(x)