The discussion centers on finding free precalculus tests and exams online. Participants share links to resources and PDFs for practice problems, emphasizing the importance of using reputable sources. Several users engage in solving specific precalculus equations, such as 3x + 7 = 0 and 2sin x + 1 = 0, while others express their need for full-length exams. The conversation highlights the availability of numerous online resources for precalculus preparation. Overall, the thread serves as a collaborative effort to gather and share study materials for students.