The answer is:
545>322
540 <997
        
                    
             
        
        
        
⅓x² +11x-75<105
⅓x² +11x-75-105<0 
⅓x² +11x -180<0 
x² +33x - 540<0 
(x+45)(x-12)<0 
(x-12)<0 or (x+45)>0
x<12 or x >-45 
 answer is A
        
             
        
        
        
I believe the answer would be D. Because, 10*12= 120 and 400/120= 3.33 
Since you are talking about money, you would round up. 
Meaning that the answer should be D.
        
             
        
        
        
Answer: It would cost $150 for a party of 9 people and it would cost $260 for 20 people
Step-by-step explanation:
The number 9 falls in between 0<n<_ 12 so the cost is 150
The number 20 falls in between 12<n<_ 20 so the cost is 260