Answer:
Exponential decay.
Step-by-step explanation:
The magnitude of the base (also known as the "common factor") tells us whether a given exponential equation represents growth or decay.
Standard equation for expo. growth: y = 3(b)^x, where b is the base.
If 0<b<1, we have expo. decay; if 1<b, we have expo. growth.
Thus, y = 3(0.5)^x represents expo. decay.
