Answer:
y = (x + 8)² + 6
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
To obtain this form use the method of completing the square
add/subtract (half the coefficient of the x- term )² to x² + 16x
y = x² + 2(8)x + 64 - 64 + 70
    = (x + 8)² + 6 ← in vertex form
 
        
             
        
        
        
Answer:
the second one 
Step-by-step explanation:
in order for it to be a function the x values CANNOT repeat. 
in answer a the x value -6 repeats so that cannot be a function 
in answer b none of the x values repeat so its probably this one but lets check the other ones just in case
in answer c the x value 8 repeats so it cannot be this one 
in answer d the x value -2 repeats so it cant be this one \
b is the only one that does have repeating x values therefore it is the second one
 
        
                    
             
        
        
        
Answer: 55x +200 = 530           x=6
Step-by-step explanation:
55x +200 = 530
-200                       -200
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55x = 330 
divide by 55 on both sides 
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x=6