What is the range of the exponential function shown below

The correct option is C.

Step-by-step explanation:

Range is the set of output or the values of the function.

The given function is

If a exponential function is defined as g(x)=a^x, where a>0, then the value of g(x) is always greater than 0, g(x)>0.

It means,

Multiply both sides by 9.

The value of the function f(x) is always greater than 0, therefore the range of the function is

Range = { y | y>0}

Hence the correct option is C.