Answer:
2.5 feet
Step-by-step explanation:
Since circumference is just pi(we're using 3.14 in this case) * diameter, which is our answer, we need to divide the circumference(which is 7.58) BY 3.14, which is pi. This leaves us with the diameter, which is 2.5. The unit is already feet, so we needn't do anything about that.
 
        
             
        
        
        
The expression you would need to know how many games Chris sold is: 
(504 divided by n) -17
        
             
        
        
        
Answer:
the radius found on the letter c