Answer:
3
Step-by-step explanation:
When both sides in the pre-image are multiplied by 3, you get the image. and since it is getting bigger and not smaller, it would be a whole number aka 3. 
 
        
             
        
        
        
Answer:
30in squared
Step-by-step explanation:
(4x5) + ((4x3)/2)  + ((4x2)/2) = 20 in sq.