If the maximum volume of a pelican's bill is 700 cubic inches, the total volume inside of pelican's bill must be less than or equal to that. We can represent this situation using an inequality.
... ≤ 700Let v be the additional volume the pelican can scoop. The pelican has already scooped 100 cubic inches of water into its bill, so the sum of that and v must be less than or equal to 700.
100+v≤ 700
Solving this inequality for v will tell us how much more water the pelican can scoop.
