Answer:
I think it might be B a mean is bigger than the median 
 
        
             
        
        
        
Answer: The answer is 5a+13
Step-by-step explanation: 
 
        
             
        
        
        
Using simultaneous equation,
a=-1, b=1, x=1, y=0
OR
a=1, b=-1, x=1, y=0.
        
             
        
        
        
Answer:
456
Step-by-step explanation:
11.5 oz would be 2 standard deviations below the mean... z -score = -2    = .0228 (from Z-Score table) 
      22.8%   of 2000 = 456 
 
        
             
        
        
        
Answer:
7
Step-by-step explanation:
3RD MAN: 1
2ND MAN: 2
1ST MAN: 4
3rd Man = 1/2+1/2 = 1
2nd Man = 1+1 = 2
1st Man = 2*2 = 4