Answer:
12 Step-by-step explanation:
 
        
             
        
        
        
Answer:
The first one is x=-y-2z-7
The second one is x=-1/3y + 1/3z + -4/3
The third one is x= 3y + 2z + 17
 
        
             
        
        
        
Answer:
not enough info
Step-by-step explanation:
 
        
             
        
        
        
$25 - $4 = $21
You spent $21 on 3 boxes of granola bars.
3 boxes = $21
1 box = $21 ÷ 3 = $7
One box of granola bar costs $7.
        
                    
             
        
        
        
It has to be B since it shoes both boys and girls.