选择题：某公司计划购进一批原料加工销售，已知该原料的进价为6.2万元/t，加工过程中原料的质量有20%的损耗，加工费m（万元）与原料的质量x（t）之间的关系为m＝50＋

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题目内容：

某公司计划购进一批原料加工销售，已知该原料的进价为6.2万元/t，加工过程中原料的质量有20%的损耗，加工费m（万元）与原料的质量x（t）之间的关系为m＝50＋0.2x，销售价y（万元/t）与原料的质量x（t）之间的关系如图所示．

image.png

（1）求y与x之间的函数关系式；

（2）设销售收入为P（万元），求P与x之间的函数关系式；

（3）原料的质量x为多少吨时，所获销售利润最大，最大销售利润是多少万元？（销售利润＝销售收入﹣总支出）．

The policeman caught hold of the thief and hit him ____the head.

The policeman caught hold of the thief and hit him ____the head.

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Have you decided when_____? Yes, tomorrow morning.

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would, like, you, to see, what changes, in our school (?)

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The ______ (two) month is February

The ______ (two) month is February

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—Sam，_________I join you in the community service?—Of course, you can.

—Sam，_________I join you in the community service?—Of course, you can.

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