closed dot is if the number is part of the solution so if it is equal to
 and
use open if it is not part of solution as in if it is greater than or less than
 so for your picture x greater or equal to -2 it would be a closed dot
 
        
             
        
        
        
Answer:
9×5=45
Step-by-step explanation:
hope it helps and use brainly it never lies
 
        
                    
             
        
        
        
Answer:
Area = 213.18
Step-by-step explanation:
11.4 x 18.7 = 213.18
Hope this helps you! :)