What are the domain and range of the function

A) x; y

B) x>4; y>0

C) x; y>4

D) x; y

We have the following function:

f (x) = 4 * ((81) ^ (1/3)) ^ x

We observed that:

(81) ^ (1/3) = 4.326748711> 1

Therefore the function grows as it increases and decreases as x decreases.

We have then:

Domain: all reals.

Range: all reals greater than zero.

Answer:

A) x is a real number; y