You'll see in your current WebAssignments the "Practice Problems for Final Exam" WebAssignment. This is a very long optional set of practice questions for the final exam. It is not a homework assignment and has no effect on your grade. Most all of these questions have previously appeared in homework assignments, but the versions you'll find in this assignment probably will have different numerical values than the previously encountered homework problems. So it gives you a change to practice different versions of problems you've seen before.