Overview: 2 questions will be solved this time.Among them
           ☆1 inequalities
           ☆1 arithmetic calculations

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 16x+11(10-x) >= 145 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        16 * x + 11 * ( 10 - x ) >= 145         (1)

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    From inequality(1)：
         x ≥ 7

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    The final solution set is :
         x ≥ 7
[2/2 Formula]
    Work: Calculate the value of equation 90*16*7+80*11*3 .
    Question type: Mathematical calculation
    Solution:
          90*16*7+80*11*3
        =1440*7+80*11*3
        =10080+80*11*3
        =10080+880*3
        =10080+2640
        =12720
    Answer:90*16*7+80*11*3=12720

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