Answer:
B
Step-by-step explanation:
 
        
             
        
        
        
1) Cancel out the common factor which in this case is 8 
2)First apply exponent rule  now cancel out the common factors which are n and n+7 leaving you with
 now cancel out the common factors which are n and n+7 leaving you with 
3)Factorize  cancel out the common factor in this case x+2 leaving you with
cancel out the common factor in this case x+2 leaving you with 
4) Factorize  cancel out the common factor in this case 3w-1 leaving you with
 cancel out the common factor in this case 3w-1 leaving you with 
5) In the picture 
6)In the picture
I am REALLY tired sorry I wont be able to do the rest, I hope these are helpful :) 
 
        
             
        
        
        
Answer:118.3
Step-by-step explanation:
=0.5*13*18.2