Answer:
x+6
x-9
x²-x
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-11
Step-by-step explanation:
Substarct 2 from -9.
 
        
                    
             
        
        
        
The answer would be C and D; the squares will be the base of the pyramid as the triangles are placed on each of the square’s sides to compose the 3D square pyramid
        
                    
             
        
        
        
Answer:
12 & 13
Step-by-step explanation:
trust me