Use a scalar product to show that AB is perpendicular to BC

Please see attachment. This is a voting project that needs completion, for Math 120. Looking for a completed product with the instructions showing on the below attachments....

See attached file. All information has been attached....

i can only use skype to share my desktop/browser window, expert will need to answer questions via skype chat or via their shared desktop I can not use applications like teamviewer....

I need someone to take my online maths exam for me . They need to login as me with the security software to show I’m not issuing internet to cheat and to complete the online exam with a pass rate of 89% I have the mock test available and the marking scheme to look at before hand and the online maths test is functional level 2 maths exam . I would like a quote for this as I’m on tight budget . Many thanks...