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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 18a+14（a+3） ≥2250 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        18 * a + 14 * ( a + 3 ) ≥2250         (1)

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    From inequality(1)：
         a ≥ 69

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    The final solution set is :
         a ≥ 69

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