Question

Find the sum of the first 9 terms of the sequence. Show all work for full credit.

2, -7, -16, -25, ...

Answer 1

It looks like the rule is: -9

Answer 2

2-9=-7
-7-9=-16
-16-9=-25
-25-9=-34
-34-9=-43
-43-9=-52
-52-9=-61
-61-9=-70

So, the first 9 numbers in the sequence are 2,-7,-16,-25,-34,-43,-52,-61,-70

Answer 3

So, just add all of those numbers to get your answer.

Answer 4

2-7-16-25-34-43-52-61-70 = -306

Answer 5

okay thank you c:

Answer 6

Just combine the list I gave and caters answer to show full work. :)

Answer 7

lol okay c: thankyou ^.^