The quiz 3 key can be found here. I will not have time to finish grading quiz 3 before tonight's class.
Exam 1 will be on Tuesday, 9/21. The exam will cover chapters 1-4, and all lectures up through this Thursday. Note that the exam will be graded immediately after you take it, and grades will be sent out via email, the following day. This is to provide you with as much information as possible in case you want to drop the class without receiving a W on your transcript.
There will be a Q&A review session for the exam this Thursday, 9/16. The review session will be generated by your questions! I will not lead a structured or comprehensive review. You will also have a chance to ask questions before the exam during next week's office hour.