Find the vertex of the parabola f(x) = 4 – x2

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Evaluate: -42

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Evaluate f(-1) if f(x) = -2(x – 4)

Simplify the expression: 3(x-2)-2(x+3)

Find the slope of the line that contains the points (-7, 4) and (5, -12)

x2 – 5x + 6 = (x – 2)(x – 3)

Convert 18 from degrees to radians.

NG tubes are plastic or rubber tubes inserted through the nasopharynx into the large intestine.