Answer:
42sq
Step-by-step explanation:
        5:7
30 sq: x sq
30/5=6 sq for 1 of the ratio 
6*7=42 sq for 7 of the ratio
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Keep  and group -3x+8x which becomes 5x. Then keep -6.
 and group -3x+8x which becomes 5x. Then keep -6. 
Then it becomes the answer above. 
 
        
             
        
        
        
Answer:
13 Adults and 6 Kids
Step-by-step explanation:
13*9 = $117 
6*5.5 = $33
$117 + $33 = $150
 
        
             
        
        
        
Answer:
D
Step-by-step explanation:
 
        
             
        
        
        
V or x is something so if you add 9 to get 8 then you must subtract 9 from 8 to get -1 which would be your answer