The vertex of a parabola is the point where the parabola crosses its axis of symmetry. Therefore, the coordinates of the vertex is (2,4).
What?
i dont know maybe...hmmmm
There you go. Sorry its blurry
T he x and y intercepts of the equation:
are : y-intercept is (0,-5) and x-intercept is (4,0)
So, Option D is correct.
Step-by-step explanation:
we need to identify the x and y intercepts of the equation: 
Finding x-intercept
For finding x-intercept put y=0
We are given the equation:

Solving:

So, x-intercept is (4,0)
Finding y-intercept
For finding y-intercept put x=0
We are given the equation:

Solving:

So, y-intercept is (0,-5)
the x and y intercepts of the equation:
are :y-intercept is (0,-5) and x-intercept is (4,0)
So, Option D is correct.
Keywords: x and y intercepts
Learn more about x and y intercepts at:
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The graph shows that at 50 stairs, the height is 350 inches. Since the increase is consistent, we can multiply this number (350) times two (350 x 2) which will give us 700 inches. So the answer is D. 700 inches.