一家小型放映厅的盈利额y(元)同售票数x之间的关系如下图所示,其中保险部门规定:超过150人时,要缴纳公安消防保险费50元.试根据关系图回答下列问题:(1)当售票数x满足0≤x≤150元,盈利额y(
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![一家小型放映厅的盈利额y(元)同售票数x之间的关系如下图所示,其中保险部门规定:超过150人时,要缴纳公安消防保险费50元.试根据关系图回答下列问题:(1)当售票数x满足0≤x≤150元,盈利额y(](/uploads/image/z/14026253-5-3.jpg?t=%E4%B8%80%E5%AE%B6%E5%B0%8F%E5%9E%8B%E6%94%BE%E6%98%A0%E5%8E%85%E7%9A%84%E7%9B%88%E5%88%A9%E9%A2%9Dy%28%E5%85%83%29%E5%90%8C%E5%94%AE%E7%A5%A8%E6%95%B0x%E4%B9%8B%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB%E5%A6%82%E4%B8%8B%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%85%B6%E4%B8%AD%E4%BF%9D%E9%99%A9%E9%83%A8%E9%97%A8%E8%A7%84%E5%AE%9A%EF%BC%9A%E8%B6%85%E8%BF%87150%E4%BA%BA%E6%97%B6%2C%E8%A6%81%E7%BC%B4%E7%BA%B3%E5%85%AC%E5%AE%89%E6%B6%88%E9%98%B2%E4%BF%9D%E9%99%A9%E8%B4%B950%E5%85%83.%E8%AF%95%E6%A0%B9%E6%8D%AE%E5%85%B3%E7%B3%BB%E5%9B%BE%E5%9B%9E%E7%AD%94%E4%B8%8B%E5%88%97%E9%97%AE%E9%A2%98%EF%BC%9A%281%29%E5%BD%93%E5%94%AE%E7%A5%A8%E6%95%B0x%E6%BB%A1%E8%B6%B30%E2%89%A4x%E2%89%A4150%E5%85%83%2C%E7%9B%88%E5%88%A9%E9%A2%9Dy%28)
一家小型放映厅的盈利额y(元)同售票数x之间的关系如下图所示,其中保险部门规定:超过150人时,要缴纳公安消防保险费50元.试根据关系图回答下列问题:(1)当售票数x满足0≤x≤150元,盈利额y(
一家小型放映厅的盈利额y(元)同售票数x之间的关系如下图所示,其中保险部门规定:超过150人时,要缴纳公安消防保险费50元.试根据关系图回答下列问题:
(1)当售票数x满足0≤x≤150元,盈利额y(元)与x之间的函数关系式是________________.
(2)当售票数x满足150<x≤200元,盈利额y(元)与x之间的函数关系式是_________.
(3)当售票数x为_________时,不赔不赚;当售票数x满足_________时,放影厅要赔本;若放影厅要获得最大利润200元,此时售票数x应为_________;
一家小型放映厅的盈利额y(元)同售票数x之间的关系如下图所示,其中保险部门规定:超过150人时,要缴纳公安消防保险费50元.试根据关系图回答下列问题:(1)当售票数x满足0≤x≤150元,盈利额y(
(1)设y=kx+b,
把(0,-200),(150,100)代入可得,
{-200=b100=150k+b
∴k=2,b=-200,
则y=2x-200;
(2)3=3x-50
(3)当y=0时,x=100,即当售票数x为100时,放映厅不赔不赚;
∵当0≤x<100,2x-200<0,∴放映厅要赔本;
当y=200时,x=200,放映厅要获得最大利润200元,此时售票数x应为200.
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我不知道。
(1)y=2x-200 (2)y=3x-50 (3)100 0≤x<100 200
(1)当售票数x满足0≤x≤150元,盈利额y(元)与x之间的函数关系式是 Y=X
(2)当售票数x满足150<x≤200元,盈利额y(元)与x之间的函数关系式是
Y=X-50(要交50元保护费!) (100<Y≤150)
要利润比x=150时多,即多于150元.则有150≤Y=X-50
得200≤X即可