Making rent and getting new tires

I'm currently a student at Grand Valley State University living in off campus apartments. At the end of March, rent is due, which is about $600. I also need to buy new tires for my car because one of them is flat and the rest need replacing, which will be about $100. On top of that I just had to pay $300 to my landlord and I'm very short on cash. I need about $800 for everything and maybe a little food too before the first of March. I would appreciate all the help I can get. Thank you in advance for everything.