D the best answer My teacher help me into the equation
        
             
        
        
        
Yes it is a function. It passes the vertical line test. In other words, it is impossible to draw a single vertical line through more than one point on the V shaped graph. Any input leads to exactly one output.
The domain is the set of all real numbers. This is because we can plug in any x value leading to some specific y value. There are no holes or gaps or jumps to indicate we must restrict any given x value. The domain would not be the set of whole numbers only because values between the whole numbers (eg: decimal values like x = 2.75) work just fine. 
The range is the set of y values such that y is either 0 or larger than 0. In short, 
the range is 
. Notice how any point on the V shaped graph has a y coordinate that is either 0 or larger than 0. It is impossible to get a y value that is negative.
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In summary,
Yes it is a function
Domain: all real numbers
Range: 

So 
the answer is choice B
 
        
             
        
        
        
I want to say A bit that's probably not right. try it
        
                    
             
        
        
        
4% Of 75 is 3 so yeah the answer to your question is 3
        
                    
             
        
        
        
From least to greatest: |6.99|,|-7.09|,|7.15|,|-7.18|,|-7.21|. This is becauase every value will be positive because of the absolute value