Answer:
The upper graph
Explanation:
An exponential function with base b is defined by ƒ(x) = a(b)ˣ.
The base b is the growth factor — the factor by which each successive term is multiplied.
If b < 1, we have a situation of exponential decay.
The upper graph fits that description.
Furthermore, the function appears to be
ƒ(x) = ½(½)ˣ,
because
f(0) = ½(½)⁰ = ½ × 1 = ½
and we have a y-intercept at (0, ½)
The bottom table is wrong, because the growth factor is 2 and the function is an example of exponential growth.