How do I decide which AP Exams to take?

You can decide based on your interests, your intended college major, or your intended career. Visit Choosing Your AP Courses to begin. For example, if you plan to major in chemical engineering, it may make sense to take AP Chemistry and AP Calculus. 

You may also consider the AP recognition policies of any specific colleges/universities where you think you will apply. For example, if you plan to major in chemical engineering and the university you’re considering will give you credits for Calculus (equivalent of an introductory course), then you can start at a higher level or take another subject if you’ve already met the requirement for your degree. Or your university requires a number of APs just for admission. Review each university’s AP policy carefully.