It kind of matters which algebra. Algebra 1: just know your FOIL method and all the equations with variables. Algebra 2: you probably want to refresh on conic sections and logs and series and just understand it all. Good luck plus watch some videos for refreshment.
I was going to say what Jung012 =) said lol. Definently study logs, matrixes like 180 turns, (we had that on the midyear). Get a good nites sleep, eat a good breakfast like eggs, bacon, and fruit =) Stay relaxed at good luck!