Is the answer to your question 4/15?
        
                    
             
        
        
        
TeX rendering has been iffy at best on this site for the past few days, at least in my experience. I've attached a solution below.
 
        
             
        
        
        
For 2/5 meter, it takes = 1 min.
For 1 meter, it is = 5/2 min.
Now, for 6 meters, it would be: 5/2 * 6 = 30/2 = 15
In short, Your Answer would be 15 minutes
Hope this helps!
        
                    
             
        
        
        
The correct answer for that is y=4
        
                    
             
        
        
        
Step-by-step explanation:
the leading coefficient means the coefficient (factor) of the term with the highest exponent of the variable (typically x).
with sufficiently large values of this variable (x - going far enough to the right) this term will "win" in value against any other term of the polynomial expression. 
and therefore the sign of its factor (coefficient) will determine, if the curve will go up or down. 
a positive factor (coefficient) will make the value of this term and therefore of the whole polynomial larger and larger, making the curve going up to +infinity.
a negative factor (coefficient) will make the value of this term and therefore of the whole polynomial smaller and smaller (more negative and more negative), making the curve going down to -infinity.