某大众汽车经销商在销售某款汽车时，以高出进价20%标价．已知按标价的九折销售这款汽车9辆与将标价直降0.2万元销售4辆获利相同．

关于x的一元二次方程x²+2x﹣k=0有两个不相等的实数根，则k的取值范围是____．

已知点P（1，2）在α终边上，则$\frac{6\sin \alpha +8\cos \alpha }{3\sin \alpha -2\cos \alpha }$=____ 

C

    There are many kinds of clubs in the US middle schools, such as the music club, the sports club, the chess club, the swimming club… But do you know the homework club? It is a popular club in many US middle schools. More and more students spend their afternoons in the homework clubs. The US middle school students need a quiet place to study in. But games, computers and TVs are all around them at home. So the homework club is just for them to do their homework. The club is quiet and it's good for students to study in it. Some teachers are there, too. They can answer students' questions and help with their homework. If students finish their homework on time, they will get a snack. It's always children's favorite food. Then they can go home and play games or watch TV happily.