I need help with this please I’m struggling

I'm so close to finishing all these.

What rotation was applied to triangle def to create d’e’f’?

Which of the following exponential functions goes through the points (1, 6) and (2, 12)? f(x) = 3(2)x f(x) = 2(3)x f(x) = 3(2)−x f(x) = 2(3)−x