0.0000000861 is your answer
 
        
                    
             
        
        
        
Selection B is appropriate.
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The signs of the coefficients tell you the binomial factors must have both signs positive (selections B and C only). Selection B produces an x-term that is 15x+15x=30x (as we want); selection C produces an x-term that is 45x+5x=50x (not what we want).
        
                    
             
        
        
        
Answer:
It means turning 180 degrees to the left
Step-by-step explanation: