Which is the graph of f(x) = 100(0.7)x?

we have

we know that

In this problem we have an exponential function of the form

 Where

 a-------> is the initial amount

 b-------> is the base of the exponential function

 as --------> 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

it would open into a square depending on the type of envelope i’m not sure about the second part

18.8cm hope i at all

step-by-step explanation: