You have $1200 and a few different investment choices for the money. Below are a series of descriptions of investments, and equations that match with some of the descriptions. Please drag the equations to match the descriptions.

Compound interest equation:
Find equations for each case below.
1) P = 1200, r = 0.09, n = 1, t = 15
2) P = 1200, r = 0.12, n = 4, t = 15
3) P = 1200, r = 0.12, n = 12, t = 15
4) P = 1200, r = 0.15, n = 2, t = 9