How many solutions does the system have?\begin{cases} y = 9x-5 y = 9x+6 \end{cases}⎩⎪⎪⎨⎪⎪⎧y=9x−5y=9x+6Choos e 1 Choose 1 (Choice A)AExactly one solution(Choice B)BNo solutions(Choice C)CInfinitely many solutions

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.