Question

What the f is this, and how do I "evaluate" it?

Answer 1

what subject?

Answer 2

Algebra 2

Answer 3

i honestly have no clue how to work it out but the anser is 26

Answer 4

Thanks. I suppose that will work for now. I can ask my math tutor about it later

Answer 5

https://mathway.com/ go to precalculus section and it has the sigma. this website is really helpful

Answer 6

Cool, thanks! I'll check it out~

Answer 7

no probs!!:)