Question

Plz helpppp fast plzzzzz Write the sum using summation notation, assuming the suggested pattern continues. -3 + 6 + 15 + 24 + ... + 132. a) summation of negative 27 times n from n equals 0 to infinity b) summation of negative 27 times n from n equals 0 to 15 c) summation of the quantity negative 3 plus 9 n from n equals 0 to infinity d) summation of the quantity negative 3 plus 9 n from n equals 0 to 15

Answer 1

Answer:

It is the first choice.

Step-by-step explanation:

This is a sequence where

the next term is obtained by adding 6.

first term = -9 + 6(0) = -9

second term = -9 + 6(1) = -3

third term = -9 + 6(2) = 3

4th term = -9 + 6(3)  = 9  

and 81 = -9 + (6*15).

So the answer is  Sigma (-9 + 6n)  from n= 0 to n = 15.