Answer:
the number itself, (units) are getting bigger
Step-by-step explanation:
 
        
             
        
        
        
Answer:
28 units³
Step-by-step explanation:
The volume (V) of the prism is calculated as
V = Al ( A is the area of end face and l is the length )
Here A =  and l =
 and l =  , thus
 , thus
V =  ×
 ×  ( cancel 21 and 3 by 3 and 2 and 8 by 2 )
 ( cancel 21 and 3 by 3 and 2 and 8 by 2 )
=  ×
 ×  = 7 × 4 = 28 units³
 = 7 × 4 = 28 units³
 
        
             
        
        
        
Where are the sets? I don't see any...
 
        
             
        
        
        
20 minutes because 9/9 is simplified to 1 as 5/5 is simplified to 1