CAN SOMEONE DO THIS PLEASE DUE SOON PLEASE!!

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.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2