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Answer:
Refer the attached figure.
Step-by-step explanation:
Given : Chelsea is graphing the function .
She begins by plotting the initial value.
To find : Which graph represents her first step?
Solution : We have given the exponential function.
The form of exponential function is
Where,
a is the initial value
b is the base
x is the exponent
On comparing the given function with exponential function we get, a=20 the initial value.
or
The initial value is the value of the function when the value of x is equal to zero.
So, In the given function put x=0
The initial value is the point (0,20)
Now, we plot the graph which is the required result and represents her first step.
Refer the attached figure below.
