A:AnswerWiFi and internet service is not included. The product has a Wireless card that allows you to connect via WiFi to an existing internet service and wireless router.
A:AnswerIf the speakers worked before and you tried a reset and they still do not work, the tablet may need repair. For warranty assistance please call 800-816-2237. This number is available 24/7 to assist you.
A:AnswerIf I understand the question correctly, of course it can, with its calculator app. You may be able to find a more specific app to download for the calculations you want to run; there are other calculators through google play store.