Answer: 

Note: to write the domain in interval notation, you'd write [-4,5]
if you need the domain in set-builder notation, then you'd write 

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Explanation:
The domain is the set of possible x input values. Look at the left most point (-4,-1). The x coordinate here is x = -4. This is the smallest x value allowed. The largest x value allowed is x = 5 for similar reasons, but on the other side of the graph.
So that's how I got 

 (x is between -4 and 5; inclusive of both endpoints)
Writing [-4,5] for interval notation tells us that we have an interval from -4 to 5 and we include both endpoints. The square brackets mean "include endpoint"
Writing 

 is the set-builder notation way of expressing the domain. The 

 portion means "x is a real number"
 
        
        
        
The extraneous root is
x = 2
        
             
        
        
        
Answer:
4x-7=x+2
3x=9
x=3
3-50=-47
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
2197 cubic centimeters
Step-by-step explanation:
13^3=2197