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Find all \(c\) that satisfy \( \frac{c}{3} \le 2+c < -2(1+c).\)

Express your answer in interval notation, simplifying any fractions which occur in your answer.

 May 29, 2020
edited by Guest  May 29, 2020
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The answer is (-1/2,3/7).

 May 31, 2020

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