Which of the following equations has a solution 3 = 4? Select all that apply.
0-2 (3.2 - 4) = -16
o (10x + 2) = 6
20- 15x = 6 - 2 (4.0 + 7)
0 (9x – 12) + 6 = -10

Can someone help me ?

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

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answer:

c. the third graph

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the correct answer is x/3+10≥32

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