How long should I be able to expect my brakes and rotors to last? I have a two year old car with less than 30,000 miles on it. 2007 Saturn Vue. I don't know what the Green Line is supposed to mean but it is front wheel drive

It all depends on your driving conditions if you have a lot of stop and go traffic everyday you will wear them out alot faster than highway travel. generally a good set of brakes especially original brakes should last about 50,000 miles if not driven to hard or under extreme conditions, most rotors can be machined atleast once before having to be replaced with new ones unless your vehicle runs composite rotors they will have to be replaced everytime you have new pads installed.

Average brake pad life is about 40 - 50 K. If you drive in city traffic a lot, 40,000 is tops.
Do you use 2 feet to drive? Big no-no with disc brakes.
Very slight pedal pressure causes the brake pads to rub the rotor all the time you are driving. Only way to avoid that, is to use one foot on the brake.