You can put this solution on YOUR website! Find the average rate of change of f(x) = x^2 + 4x - 6 from x = -3 to x = 2.
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average rate = [f(2)-f(-3)]/[2--3]
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= [(4+8-6)-(9-12-6)]/5
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= [6--9]/5
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= 15/5
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= 3
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