I've already gone over why gas is more expensive now.
The cost of movies has gone up coincidentally with the increase in salaries paid to stars and producers. When a liberal movie star demands millions just to walk on the set, it's not surprising that his fans have to pay a lot more for a ticket to see him. We see the same dynamic in professional sports.
McDonalds burgers are still very cheap.
No, the FEDERAL MW has not kept up with inflation, and why should it when states, cities and counties can set their own wherever they want to? See, what's really going on here is not true concern over the MW, but rather concern that various areas are free to decide for themselves what the proper MW is. Liberals can't stand that. They want instead for the federal government to get out the sledgehammer and force everyone into a one size doesn't fit all model.