Your current salary is $$100,000($S$)$ per year. If you invest $10$ percent $($b$)$ of each

year's salary in a retirement plan at a guaranteed return $($i$)$ of $10$ percent per year,

how much would you have at the end of $30$ years, if:

a$)$ Your salary is unchanged for the next $30$ years?

b$)$ Your salary grows $($g$)$ at $4,$ percent per year?