Answer:
Step-by-step explanation:
Range goes from the lowest point on a graph to the highest point, not including anything in between those 2 extremes. We will evaluate the quadratic for the values given. First f(2):
 so
 so
f(2) = -1 
Now, f(4):
 so
 so
f(4) = 11
Now, f(7):
 so
 so
f(7) = 44
The lowest y value is -1 and the highest is 44, so the range is from -1 to 44 (I can't tell which of your choices reflects that because it's too small!)
 
        
             
        
        
        
In this problem your answer would be < the gator likes larger numbers
        
                    
             
        
        
        
Answer:
x=10
Step-by-step explanation:
(17+x+10+51+17)/5=21
95+x=105
x=10