From what i gathered... i think i<span>t would be 3.5?
Hope i</span><span>t helps. . . . </span>
Hi there!
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I believe your answer is:

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Here’s why:
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Hope this helps you. I apologize if it’s incorrect.
Answer:
sum of the areas of their faces
Step-by-step explanation:
To determine which values of x we would use for creating a graph of a parabola, we need to know where the line of symmetry, or the axis of symmetry is. For that we can use the equation:
y=(x-h)+k, where we know h and k.
From this equation we can see that the line of symmetry is passing trough x=h.
And now we can determine which values do we need to add to h and to subtract from h to get values of x to create the table of values to plot a parabola.
D
E
F
Work
So the answer to the original problem:
6-4.5 +(-8) equals -1.5
D,E,and F all yeild this answer.
Another way to do it is to simply rearrange the equation
D:
6-4.5 +(-8)
6-4.5-8
your just removing the parenthesis and swapping the sign
E:
6+(-4.5) -8
is the exact same as
6-4.5 +(-8)
you're just moving the parenthesis
F:
This one you're just adding a parenthesis and flipping the of
6-4.5 +(-8)
which turns it into
6+(-4.5)+(-8)
Hope this helps!