Answer: Bill's $0.1333333 per oz
Step-by-step explanation:
 
        
             
        
        
        
Not a function.
It's conic section parabola. It's just a relation.
 
        
             
        
        
        
Answer:
it is correct you are right
 
        
             
        
        
        
On which one? You did not provide anything for me to help you with.
        
             
        
        
        
<u>Define x:</u>
Let Fred had x dollar.
Fred = x 
Greg = x + 17
<u>Solve x :</u>
x + x + 17 = 85
2x + 17 = 85
2x = 68
x = 34
<u>Find the amount each of them had:</u>
Fred = x = $34
Greg = x + 17 = 34 + 17 = $51
Answer: Greg had $51