Answer:
B. 4
Step-by-step explanation:
This table that shows the input and output values for an exponential function f(x) is,
x         -3      -2    -1    0    1    2    3
f(x) Â Â Â Â Â 1/256 Â Â Â 1/64 Â Â 1/16 Â 1/4 Â Â 1 Â Â 4 Â Â Â 16
Taking [tex]x=2[/tex] and [tex]x=3[/tex] as input (because they are 1 apart), the ratio of output is,
[tex]=\dfrac{f(3)}{f(2)}[/tex]
[tex]=\dfrac{16}{4}[/tex]
[tex]=4[/tex]