What matters is the base for the exponentiation to tell if its increasing or decreasing. Among positive numbers, smaller than 1 means decreasing, bigger than one means increasing. That's because for each increase of 1 in x we get another factor of the base. If it's bigger than 1 that's growth.
There are no negative bases here, but it's similar -- less than -1 (bigger in absolute value) grows, even though it oscillates back and fourth between positive and negative.
It's blurry but I see bases of 3, .6, .74, 1.3
3: growth
.6: decay
.74: decay
1.3: growth
