Answer:
18r 
Step-by-step explanation:
Multiply 9 by 2
 
        
             
        
        
        
Answer:
9
Step-by-step explanation:
30 multiply by 30 and divide by 100
 
        
             
        
        
        
You solve this by using google.com or YouTube.com
Or just pay attention in class to get this.   
        
             
        
        
        
Answer:
he has 121 cookies now
Step-by-step explanation:
8 times 14 plus 9
8 times 14 = 112 + 9 = 121
 
        
                    
             
        
        
        
I think x=24 but not sure