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<span>ill  try to help get u started             
         y = x^2 +1 ;
</span>The y values are 10,5,2,1,2,5,10
 For y = x^2-1, they are
<span>8,3,0,-1,0,3,8</span>
        
             
        
        
        
Answer:
16
Step-by-step explanation:
5-2=3+1=4*3=12+4=16
 
        
                    
             
        
        
        
Answer:
p percent of the observations are less than the value and (100 - p) percent are more than this value. 
Step-by-step explanation:
Given : The pth percentile is a value such that approximately
Solution :
Definition : A percentile is a measure used in statistics indicating the value below which a given percentage of observations in a group of observations falls
So, The pth percentile means p percentage of observations in a group of observations falls bellow the value 
So, (100-p) percentage of observations in a group of observations falls above the value 
So, Option a is true 
Hence p percent of the observations are less than the value and (100 - p) percent are more than this value.