题目

阅读理解What's your opinionon spicy food? Some people cannot handle even the smallest amount of the chili (辣椒) in their dinner whileothers can't get enough of it.Scientists have longbeen puzzled by why some people love chilies while others loathe them. Plentyof research has been done on the subject, dating as far back as the 1970s. Previousresults showed that a love of chilies is related to childhood experiences, and culturalinfluences affect our taste buds, too. But the latest study has found that a person'slove of spicy food may be linked to his or her personality more than anything 某厂有煤155吨，则这些煤能用的天数y与平均每天用煤的吨数x之间的函数关系式为________．