Question 1
according to some estimates, 100 percent of your income after you retire will
probably come from social security and the companies you have worked for in
the past?

true.
false

C. is the answer ur welcome

An informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

Where are the following questions

Sometimes but itt depends, their is a lot if drugs on campus too so you really can't just say that