If you invest $$12,000$ today, how much will you have: $($Use a Financial calculator to arrive at the answers. Round the final answers to the nearest whole dollar.$)$

a$.$ in $6$ years at $7$ percent?

Future value $

b$.$ in $15$ years at $12$ percent?

Future value $

c$.$ in $25$ years at $10$ percent?

Future value $

d$.$ in $25$ years at $10$ percent $($compounded semiannually$)?$

Future value $