题型:解答题 某商场推销一种书包,进价为30元,在试销中发现这种书包每天的销售量P(个)与每个书包销售价x(元)满足一次函数关系式,当定价为35元时,每天销售30个;定价为37元时,每天销售26个,问:如果要保证商场每天销售这种书包获利200元,求书包的销售单价应定为多少元? 查看答案
题型:选择题 --- What’s reported in the news --- The earthquake yesterday is said _______ more than 5 hundred people.A.to killB.that it isC.to have killedD.that it has killed 查看答案