something is most likely wrong with it.
Carry them in the bag like you would in your own car.
most likely the brakes, good place to start looking anyway
you bought a bad car. www.carfax.com
it needed a new battery duhh
Did you get a warranty in writing? If not, then you bought the car "As Is". It is your car in the condition it is in. You can of course sue but you will loose. AS IS means just that.
Lack of lubrication? worn suspension parts?
Get the vin number and go to the place you bought the car to get a key made. You will need the registration to the car.
There was a lot of squeaking while braking when my car needed new rotors.
Take the car to a mechanic or a mechanically inclined friend to take it for a test drive.
The positional sensor can produce squeaking in a car. The shocks can also cause squeaking in a suspension system of a car as well. Springs under the engine are known for this, too.
the most likely cause would be an improperly tensioned serpentine belt
Usually it is the brakes that needs servicing.