Answer:
B.
Step-by-step explanation:
 
        
                    
             
        
        
        
The larger number is (-7+14)/2 = 3.5.
The smaller number is (-7-14)/2 = -10.5.
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The two equations a+b=-7, a-b=14 can be solved to get these results. It is genrally convenient to solve them by adding one to the other, or subtracting one from the other.
 
        
             
        
        
        
3 is the answer they are after 40
        
                    
             
        
        
        
Answer: domain: (-oo,oo) range: (0,oo)
Step-by-step explanation: