What is the answer to this question?

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

Answer this question only if you know the 30 points and

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.