Purdue's campus is situated in the small city of West Lafayette, near the western bank of the Wabash River, across which sits the larger city of Lafayette. State Street, which is concurrent with State Road 26, divides the northern and southern portions of campus.
People who have sent you friend requests are visible by clicking the friend request icon in the menu bar. Friend requests you have sent are visible in your Activity Log, using filter Friends: (you may have to click more to see it).
Facebook allows you to limit who can send you friend requests. Applying the limitation will keep those strangers desperate to connect with you out of trouble. From the Friend Requests menu in the top right, click Settings and choose Everyone or Friends of Friends from the drop-down menu.