Answer:
LETTER A 
Step-by-step explanation:
I think it's correct
 
        
             
        
        
        
Answer:
Step-by-step explanation: yes because when rewritten in standard form the x term will still be raised to the 2nd power.
 
        
             
        
        
        
Well since there are more Yellow balloons there is a less chance of it getting picked twice because there other colors. 
So it will probably be 7 over 15
 
        
             
        
        
        
Answer:
71
Step-by-step explanation:
8²=64
64+7=71
I hope this helps!