$5.15 minimum wage. I know because I worked that then. Thousands per semester just in tuition. In state, public. Burgers would be $10k/yr full time. No one puts themselves through college like that. $900/mo is mostly rent at that point.
It just depends. I did nearly the same thing but went to a really cheap college. Mine was a bit more recent and I was making 8.25 also in a really low cost of living area which makes a big difference for sure