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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1.5(1+0.005x)(500-x) >= 750 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1.5 * ( 1 + 0.005 * x ) * ( 500 - x ) >= 750         (1)

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    From inequality(1)：
         x ≥ 0

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    The final solution set is :
         x ≥ 0

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