<p>I know for a fact on the past ap exams, work problems have appeared. However, I looked in pr and barron's and couldn't find explanations or examples. Do we still need to know how to do work problems?</p>
<p>Thanks.</p>
<p>I know for a fact on the past ap exams, work problems have appeared. However, I looked in pr and barron's and couldn't find explanations or examples. Do we still need to know how to do work problems?</p>
<p>Thanks.</p>