Answer:
i believe d. I could be wrong
Step-by-step explanation:
 
        
             
        
        
        
 The succesor of the natural number 2012 is 2013.
        
                    
             
        
        
        
(x + 2)(5x^2 + x - 4) =
x(5x^2 + x - 4) + 2(5x^2 + x - 4) =
5x^3 + x^2 - 4x + 10x^2 + 2x - 8 =
5x^3 + 11x^2 - 2x - 8 <===
        
                    
             
        
        
        
X - <span>the cost of cell phone service before tax is added
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