Answer:
8000in³
Step-by-step explanation:
20³=20*20*20=8000
 
        
             
        
        
        
Answer:
320
Step-by-step explanation:
if he received 10 less than half then you would just have to add that 10 back and multiply by 2.
150+10=160*2=320
 
        
                    
             
        
        
        
The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3