Option B is the answer.
What is exponential function?
When we calculate average rate of change of a function over a given interval, we’re calculating the average number of units that the function moves up or down, per unit along the xx-axis. We could also say that we’re measuring how much change occurs in our function’s value per unit on the xx-axis.
The formula for average rate of change is -
Δx/Δf =
f(x2) - f(x1) / x2 - x1
The correct answer is option B.
Learn more about exponential function, refer:
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