we cannot give you a full solution, of course, because you have to hand this in. i will give you a hint.

recall that the terms of an arithmetic series are of the form

for

where is the nth term, is the current number of the term, is the first term, and is the common difference.

use that to find the formula for the first 8 terms, then formulate them as the question asked to find what the question asked for

example, the first term is

the second is

the third is ...