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).
To remove them from People You May Know, click x next to their names. Facebook doesn't send friend requests to anyone that shows up in this list on your behalf. Keep in mind that you should only send friend requests to people you have a real-life connection to, like your friends, family, coworkers or classmates.