Answer:
all real numbers greater than 0
Step-by-step explanation:
we have
[tex]f(x)= \frac{1}{7} (9)^x[/tex]
we know that
Range is the set of y values for which the function is defined
using a graphing tool
see the attached figure
The domain is the interval ----> (-∞,∞) All real numbers
For all positive and negative values for x the value of y is always positive
The range is the interval ---->(0,∞)
[tex]y> 0[/tex]
All real numbers greater than 0
