how do I change my iTunes password if I've forgotten answers to security questions?

Follow these instructions

If you forgot the answers to your Apple ID security questions - Apple Support

Refer the below article it may help you !!!

If you forgot the answers to your Apple ID security questions - Apple Support

If you do not have rescue email ID or still facing issue you need to contact Apple Account Security Team of your country via PHONE SUPPORT.

Below article gives you the contact numbers of Apple Account Security Team Country wise -

Contact Apple for help with Apple ID account security - Apple Support

I'm using a Motorola

You can reset it via email : http://iforgot.apple.com

Or contact Support in your country : Contact Apple for help with Apple ID account security - Apple Support