某公司将进货单价为8元一个的商品按10元一个销售，每天可卖出100个，若这种商品的销售价每个上涨1元，则销售量就减少10个．设每个商品的上涨价格为x元，每天的销售利润为y元．

（1）写出y关于x的函数关系式并求销售价为13元时每天的销售利润；

（2）如果销售利润为360元，那么销售价上涨了几元？

（75） involves comparing actual or planned project practices to those of other projects to generate ideas for improvement and to provide a basis by which to measure performance. These other projects can be within the performing organization or outside of it, and can be within the same or in another application area.

A．Metrics

B．Measurement

C．Benchmarking

D．Baseline