Help Please! And THANK YOU!

Answer this question, only if you know the answer. 30 points and brainliest!

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.

How do you find principle and simple interest