What state is my legal residence?

I moved from Michigan to Florida in August 2017, which was the beginning of my senior year. My father got a Florida drivers license in July 2017, and a car the following August. I am trying to figure out what state is my legal residencey in? I have been trying to look online but nothing is clear, does anyone know a definite answer?

Have you seen this guideline page from the Board of Governors for the State University System of Florida?

http://www.flbog.edu/forstudents/ati/resrequirements.php

If you live with your parents and they’re Florida residents, your state is Florida, which is pretty awesome. FL tuition is super cheap.