Answer:

Step-by-step explanation:
Given
The attached graph
Required
Determine the equation
First, pick any 2 corresponding coordinates


Next, calculate the slope (m)




The equation is calculated as:

Where:
and 



Make y the subject

B, because 40 and 40 make 80 and 180-80=100<span />
I think the answer is 80 fluid ounces
The specific name for a regular quadrilateral is a polygon