Question

Identify the domain of the exponential function shown in the following graph: A curve runs just above the x axis through the second quadrant, passes through point 0 comma 1 and continues off screen near 1 comma 12. ??

all real numbers
all positive numbers
1 ≤ x ≤ 30
all integers

Answer 1

Although exponential commonly have the domain as all real numbers let us approach the problem in a different way.

The fact that the graph passes through `(0,1)` already makes the 2nd choice and 4th choice wrong since `0` is neither positive or negative.

Because the graph passes through the 2nd quadrant of `-x` makes the 3rd choice wrong.

I think the graph below might be the one.
graph{y=12^x}