Answer:
The amount of rainfall in week 0
Step-by-step explanation:
because, 3 is the y-intercept, and w stands for the week it is.
If w =0 , as in it is week 0 (before she collected data) then you substitue 0 into the equation for w you get 3. That means even before she collected data there were already 3 inches of rain. So, the answer should be 1.