Posted by ladybub on Friday, November 23, 2012 at 3:56pm.
11x - 3 ≥ -4x^2
4x^2 + 11x - 3 > 0
(x+3)(4x-1) ≥ 0
critical values are x = -3 and x = 1/4
and y = 4x^2 + 11x - 3 is a parabola opening upwards, with intercepts -3 and 1/4 .....
so x ≤ - 3 OR x ≥ 1/4
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