$($a$)$ The future value of $$600$ six years from now at $8$ percent.

$($b$)$ The future value of $$900$ saved each year for $10$ years at $6$ percent.

$($c$)$ The amount a person would have to deposit today $($present value$)$ at an interest rate of $8$ percent to have $$1,000$ five years from now.

$($d$)$ The amount a person would have to deposit today to be able to take out $$700$ a year for $9$ years from an account earning $5$ percent.