What math problem is a plus j?

Answer 1

Two players, A and B, takes turns on a gambling machine until one of them scores a success, the first to do so being the winner. Their probabilities for success on a single play are p for A and q for B, and successive plays are independent. A ) Determine the probability that A wins the contest given that A plays first.B ) Determine the mean number of plays required, given that A wins.

Answer 2

if it is something like this... 9-0.075(j+8)-5=-2 its prbably an algebraic problem ^^