Question

Im confused on what this is saying to do

Find the sum of the first 18 terms of the following sequence:

2, 6, 10 . . .

Answer 1

It basically is asking you to add up each of the terms. So... 2+6+10.....+18th term in the sequence.

Recognize that each term increases arithmetically by 4 and recall your knowledge on how to find such a summation.

Answer 2

so its 2+6+10+14+18+22+26+30+34,.... with 70 being the 18th number?

Answer 3

use the formula
"s=n/2(2a+(n-1)d)"
where s is sum of AP
n is the nth term(here 18) and a is the first term(here 2) and common difference d(here 2-6=4)

Answer 4

so if my math is correct i should get 648

Answer 5

YUP IT IS THE ANSWER

Answer 6

awesome thank you

Answer 7

ur welome