For our Precalculus class we use graphing calculators extensively.  For this you will need to obtain a sufficient graphing calculator.

Recommended
Texas Instruments TI-83 or TI-84. I am very familiar with these and thus can better help you learn to use them.

Also
Casio FX-9750GII.  Popular in recent years. More affordable and does what we need it to do.  I am not familiar with it, but have purchased one and will be learning it this year.

Others
Texas Instruments TI-89.  Does all we need to do and more.  More expensive and LCC does not allow the TI-89 on tests.

Texas Instruments TI-Nspire. Fancier and more expensive.  LCC also does not allow these.  They have many upgraded features but I don’t recommend them for various reasons.

There are graphing calculators out there that do not have the functionality that we need so check with me before buying.

If you have any questions, or if obtaining a calculator will be difficult for you, please come talk to me about it.