M has to equal 2. 11-5 equals 6. 6-4 is 2. 2 is the missing value.
        
                    
             
        
        
        
Equation B is written in vertex form, which means you can read the vertex (extreme value) from the numbers in the equation.
Vertex form is
   y = a(x -h)² + k
where the vertex (extreme point) is (h, k). Whether that is a maximum or a minimum depends on the sign of "a". When "a" is negative, the graph is a parabola that opens downward, so the vertex is a maximum.
Equation
 B reveals its extreme value without needing to be altered.
The extreme value of this equation is a 
maximum at the point 
(2, 5).
 
        
        
        
26.17 is twenty-six and seventeen hundredths.
        
                    
             
        
        
        
The least common denominator is 36
        
                    
             
        
        
        
It will take 40 hours for the water tank to become empty.
Explanation:
Divide 30 by 0.75 (equivalent to 3/4).