Answer:
 
 
Step-by-step explanation:
we know that
The equation of a vertical parabola into vertex form is equal to

where
(h,k) is the vertex of the parabola
if a> 0 then the parabola open upward (vertex is a minimum)
if a< 0 then the parabola open downward (vertex is a maximum)
In this problem we have

Convert to vertex form
Complete the square 




 --------> equation in vertex form
 --------> equation in vertex form
The vertex is the point 
the parabola open upward (vertex is a minimum)
 
        
                    
             
        
        
        
Answer:
 y=1/2x-1
Step-by-step explanation:
hope this helps 
 
        
             
        
        
        
The answer is a. If there is an i in the equation, then that means “i” is imaginary.
        
                    
             
        
        
        
Justine > Ava > Emma 
12 - 7.5 = 4.5 
x + (x+4.5) +(x+12) = 3x + 16.5 = 63
63-16.3 = 56.7
56.7/ 3 = 18.9 
 A: Emma has $ 18.9 Ava has $23.4 Justin has $30.9