Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following equation. y=x^2+x-4

a.

(-0.5, - 4)

c.

(-0.5, - 4.25)

b.

(0.5, - 4.25)

d.

(0.5, - 3.75)

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1/3 times 2/5 what could this answer be

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