You need to multiply the answer by how many people got that amount, Jan +her 2 friends would be 3 people so 
32.19 x 3 = 96.57
        
                    
             
        
        
        
I cannot see your picture, but if the plane cutting the cylinder is indeed perpendicular to the cylinder's base, then the cross section must be square or rectangular.  Going by the shape of most cylinders, I would guess that it is rectangular.
        
                    
             
        
        
        
Well, put x=0 then y=4
x=6 y=0
x=3 y=2 
Now plot the graph :)
        
                    
             
        
        
        
Essentially, 50% of $10.56 is $5.28.
This means that all we have to do is add $10.56 to $5.28, making <u>$15.84</u>
Side note: Another way that you can do this is by simply doing 1.5(10.56).
 
        
             
        
        
        
P(10) = P(2.7183) ^ 0.04 times 10
P(10) = P(2.7183) ^ 0.4
P(10) = P(<span>1.49182868673)
P(10) = </span><span>745.914343367
Rounded, it would be 746. Hope it </span>helps! :)