Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality －30xx+3300x-8400 ≥6480 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -30 * x * x + 3300 * x - 8400 ≥6480         (1)

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    From inequality(1)：
         4.710836 ≤ x ≤ 105.289164

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    The final solution set is :
         4.710836 ≤ x ≤ 105.289164

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