Write a real-world situation that can be modeled by y=3t y equals 3 to the power of t.

I start with 1 friend on Facebook. Every month I find that the number of friends I have triples.

Month 0 - - > y = 3^0 = 1 friend

Month 1 - - > y = 3^1 = 3 friends

Month 2 - - > y = 3^2 = 9 friends

Month 3 - - > y = 3^3 = 27 friends

...

Month t - - > y = 3^t