we have
\(f(x)=100(0.7^{x})\)
we know that
In this problem we have an exponential function of the form
\(f(x)=a(b^{x})\)
Where
a-------> is the initial amount
b-------> is the base of the exponential function
as \(b <1\)--------> the exponential function decreases.
using a graphing tool
see the attached figure
The domain of an exponential function is the set of all real numbers.------> (-∞,∞)
The range is the set of all positive real numbers ------------> (0,∞)
therefore
the answer in the attached figure
