Question

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

-3 + 6 + 15 + 24 + ... + 132

summation of negative 27 times n from n equals 0 to infinity

summation of negative 27 times n from n equals 0 to 15

summation of the quantity negative 3 plus 9 n from n equals 0 to infinity

summation of the quantity negative 3 plus 9 n from n equals 0 to 15

Answer 1

@AravindG

Answer 2

@hoblos

Answer 3

@CGGURUMANJUNATH

Answer 4

Will give best answer & medal!

Answer 5

let's check each choice
in the first choice what will the first term be ( for n=0 )

Answer 6

0

Answer 7

because -27*0 is 0

Answer 8

correct,
but we need to start from -3
so the first choice can't be our answer

now what about the second ?

Answer 9

-81

Answer 10

actually I take that back, the answer is either C or D

Answer 11

One of the last 2; im not sure if I use the 15 or the infinity

Answer 12

I think its the last choice

Answer 13

yeah that's correct

so now let's see our last term, it's 132
we need to check it for both choices too

Answer 14

yeah the last choice is correct

Answer 15

Ok, thanku so much!!!! you have been a great helper :)

Answer 16

glad to help:)