Question

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

Answer 1

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