Question

Need help with summation notation.

Answer 1

Write the sum using summation notation, assuming the suggested pattern continues.

-4 + 5 + 14 + 23 + ... + 131

Answer 2

I know that the pattern is n+9

Answer 3

nope it's not :P

Answer 4

Awesome :)
How many times to you add 9 until you get to 131 ?

Answer 5

\[\sum_{k=0}^{n}9k-4\]

Answer 6

15 times you add 9 to get 131

Answer 7

LOL
I was this close to believing you, @Kanwar245 but... you said n = 131 <cue in annoying buzzer sound>

Answer 8

yeah you need to figure the n

Answer 9

my bad