| ▲ | kristopolous 3 hours ago | |
casio can do graphs on device for under $40 https://www.walmart.com/ip/Casio-FX-9750Glll-Graphing-Calcul... The reason you can get used ti's for $30 is because that's how much they're actually worth. You can get a catiga if you really want for like $17: https://www.aliexpress.us/item/3256809054964211.html ... or you can go with TI for $160 ... | ||