This review sheet is rather long – because of this, I’ve marked certain problems  as optional (denoted with a double asterisk **).  If you have only a limited time for review, do the other problems first.  If you have a little extra time, the ** problems are good practice.
Optional Problems: Â 1b, 2d, 4bf, 5efij, 6ae, 7c, 8d, 10a, 12b
