If I have zinc@ -.76 & copper @.340. Put 9 in a series, what would my voltage be?

I am wondering what you are asking about. Is this an electrochemical cell? Are those reduction potentials?

When you are asked to put school subject in the box, there is a reason, that is mainly, for teachers to scan their subjects. "energy and Power " is not a school subject, but as a Physics tutor, I picked it up, and have no idea what your question is. Your use of @ sign is certainly not a chemistry nor physics symbol.
Good luck.