Step-by-step explanation:
Equation is y = -3/4x + 12.
 
        
             
        
        
        
Answer:
20x²+180x + 405
Step-by-step explanation:
Follow PEMDAS to know what you do first 
square (2x + 9) by foiling
(2x+9) (2x + 9)
= 4x²+ 36x + 81
Multiply by 5
20x²+180x + 405
 
        
                    
             
        
        
        
Answer:
54
Step-by-step explanation:
all you have to do is times 18 by 3 
 
        
                    
             
        
        
        
Answer:
12 in squared
Step-by-step explanation:
Since the side on the bigger figure is 6 and the smaller figure‘s side is 3, that means the smaller figure is half the size of the big figure. 
So.. 24 divided by 2 is 12