Question

Please help...

picture attached

Answer 1

8 + 14 + 20 + 26 + ... + 6n + 2

6n + 2

8 + 10 + 12 + 6n + 2

6n


personally, i think it is the first, but i wanted to make sure

Answer 2

there are a couple ways to do this, but i can only remember
\[\sum_{k=1}^nk=\frac{n(n+1)}{2}\]

Answer 3

ooh i thought you had to actually add !

Answer 4

yes, it is the first one

Answer 5

haha no.. thank you!! :)

Answer 6

i thought they wanted a nice closed form for this, which is not hard

Answer 7

yw