Question

MY TEACHER NEVER TAUGHT US THIS BUT SOMEHOW, EVERYONE ELSE IN THE CLASS KNOWS HOW TO DO THIS!!

Answer 1

Answer:

Very very simple. simply subtract the water table elevation, from the surface elevation. So... for the first one do 90-70=20, and so on.

Hope this helped!

Explanation:

Answer 2

all you do is subtract the surface elevation and the water table elevation. so for the first one: 90-70=20