Answer:
Option B [tex]y> 0[/tex]
Step-by-step explanation:
we have
[tex]f(x)=9(2^{x})[/tex]
This is a exponential function of the form
[tex]y=a(b^{x})[/tex]
where
a is the initial value
b is the base
r is the rate
b=1+r
In this problem
a=9
b=2
r=2-1=1=100%
The domain for x is the interval ------> (-∞,∞)
All real real numbers
The range is the interval -----> (0,∞)
[tex]y> 0[/tex]
All real numbers greater than zero
see the attached figure to better understand the problem
