Our systems unit begins day 1 of the second semester coming back from Christmas, so a New Year's resolution activity is always fitting. This worksheet is used to introduce linear systems to Algebra I students but may also work well to re-introduce to Algebra II students. The worksheet is comprised of FIVE APPLICATIONS tracking the progress of two people sharing the same resolution. Questions get progressively more difficult as the worksheet goes along, asking deeper questions and getting your students to deeper meanins about linear systems. Its a wonderful activity, PLUS it includes a vocabular summary and a formative assessment to check for understanding. I hope you love it as much as I do!