<p>Might be a dumb question but I just want to make sure before I go out and buy one:</p>
<p>For math classes, are calculators allowed? I've heard that many colleges don't allow the use of calculators, and even the math placement exam said something about calculators and math classes. </p>
<p>If they are allowed, are their any specific models that are prohibited? Can I use a TI-89?</p>