I need is asap pls : −2w+10−7w−5
a. 5w+15
b. −9w+15
c. 5w+5
d. 5−9w

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.