<p>which of these calculators should i buy?
Texas Instruments TI-NSpire Math and Science Handheld Graphing Calculator vs TI-Nspire CAS Graphing Calculator</p>
<p>I also have ti84 plus (most familiar with)
ti89 not familiar with </p>
<p>Which one of the three should i take with me for the sat in march</p>
<p>Use the ti84 if thats the one you are most comfortable with. Timing is everything on the SAT so a calculator you are comfortable with using is crucial.</p>