Question

can you help me with this please

Answer 1

\[\sum_{n=1}^{5}3(-2) ^ n-1\]

Answer 2

it's ^n-1

Answer 3

\[\sum_{n=1}^{5}3(-2)^{n-1}\]

Answer 4

yes, that's it. @doc.brown can you help me solve it.

Answer 5

In English, add up all the \(3(-2)^{n-1}\)'s starting with n=1 and stopping when n=5.

Answer 6

alright and that will be my answer?

Answer 7

No, that was my first clue. Your answer will be a number. This is math after all.

Answer 8

I got 33.

Answer 9

@doc.brown thank you! i got an 100% (: