Time Value of Money

[MY1FAMILY]

I need help with figuring the formulas for present value/ future value and when to apply them.

If you invest $10,000 today, how much will you have in :
2 yrs @ 7%
7 yrs @ 10%
25 yrs @ 15%
25 years @ 18% compunded semi-annually for this last scenario.

 

[Denis]

If you invest $10,000 today, how much will you have in :
2 yrs @ 7% :10000(1.07)^2
7 yrs @ 10% : 10000(1.10)^7
25 yrs @ 15% : 10000(1.15)^25
25 years @ 18% compunded semi-annually for this last scenario : 10000(1.09)^50