As 

 increases, [y] is expected to increase.
 
        
        
        
To determine end behavior, we only have to look at the leading term.
First, the leading term is positive, so we won't have to negate anything.
The leading term has a power that is odd.
Since the exponent is odd, this means that the function goes to positive infinity as x goes to positive infinity.
This also means that the function goes to negative infinity as x goes to negative infinity.
Those are the end behaviors.
Have an awesome day! :)
        
             
        
        
        
Answer:
Completing the experiment a few more times and combining the results to the trails already done.
 
        
                    
             
        
        
        
Let the cost of gasoline in the year 2000 be represented b the equation
y = a + b*x
where
x = months, counted from January
y = cost, dollars
The given data in the table is
Month:        Jan  Feb  Mar  Apr  May  Jun  Jul  Aug  Sep  Oct  Nov  Dec
x, months:       1       2     3       4      5       6     7      8      9     10     11      12
y, dollars:     ---      ---     ---     ---   1.76   2.13   ---     ---    ---      ---    ---     ---
When x = 5, y = 1.76.
Therefore
a + 5b = 1.76               (1)
When x = 6, y = 2.13
Therefore
a + 6b = 2.13              (2)
Subtract equation (1) from (2).
a + 6b - (a + 5b) = 2.13 - 1.76
b = 0.37
From (1), obtain
a = 1.76 - 5b
   = 1.76 - 5*0.37
   = -0.09
The required equation is
y = 0.37x - 0.09
The graph shows the line, with the given data for May and June.
Answer: D.  y = 0.37x - 0.09