The lab supervisor assigns lab time to each student based on when that student is able to come.

f. You realize that you can graduate a semester early by forgoing a semester of study abroad.

g. At the student union, there is a bulletin board on which people advertise used items for sale, such as bicycles. Once you have adjusted for differences in quality, all the bikes sell for about the same price.

h. You are better at performing lab experiments, and your lab partner is better at writing lab reports. So the two of you agree that you will do all the experiments, and she will write up all the reports.

i. State governments mandate that it is illegal to drive without passing a driving exam.