Answer:
A. f(x) = 2(0.5)^x.
Step-by-step explanation:
When x = 0, f(x) = 2
so it is either 2(0.5)^x or 2(0.25)^x
We see from the graph that when x = 1, f(x) = 1.
So it must be A because 2(0.5)^1 = 2*0.5 = 1.
