First, depending on teacher preference. If not, TI-84 silver is an old one but not as good as T1-nspire;
Second, if teacher asks T1-nspire, then buy touchpad
Third, my understanding is
CAS version is not allowed by SAT and ACT.
Second, if teacher asks T1-nspire, then buy touchpad
Third, my understanding is
CAS version is not allowed by SAT and ACT.