Answer:1
Step-by-step explanation:
I had to give details 
 
        
                    
             
        
        
        
Well first you have to add common like terms in this case 2r and -6r to get -4r now your equation is -4r+8=40, now subtract 8 from both sides to leave r by itself and get -4r=32, now divide both sides by -4 to get r=-8
Hope this helps
        
                    
             
        
        
        
Answer:
keep doubling the answer by 6
 
        
             
        
        
        
3 = AIA ( Alternate Interior Angles)
4 = Definition of AIA
        
             
        
        
        
Answer:
Step-by-step explanation:
The recursive form is a(n + 1) = a(n) + 2, with a(1) = 8.
The next term is a(6) = a(5) + 2, which heere is a(6) = 16 + 2 = 18