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Guess what!A Casio-girl called me and asked me which graphing calculator I had...Er...
You can substract 2.I've just sent back a TI-81 I had on loan.I've also just sent a CAS+ to jimbauwens so he can dump it for us!
I can't imagine how much this would have costed brand new
Y U HAS SO MANY NSPIRE??! Seriously, though, that's over 20 of them