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C， if salary is x $，then his total salaries will be （P-10）*Q, while Q=1000-P,so the maximum function expresion is (P-10)*(1000-10p) .P=55,the worker`s salary per unit is 45 dollars.

如果要素供给曲线向上倾斜，要素市场由竞争性转向买方垄断一定能增加厂商利润这种说法对么？为什么？

顶上去，等高手解答