I tried subtraction addition multiplication and division and I am still very confused on this
        
             
        
        
        
Answer: 5? 
Step-by-step explanation:
there are 5 prizes to be chosen from.
 
        
             
        
        
        
Y=2.50x+20. Plug in values for x starting at 0 and you will get values for y and then graph.
 
        
        
        
(n^-3)^6=n^-18=1/n^18
the answer is D