Answer
$\left[\begin{array}{cccccc}
Int. & [0,40] & [40,80] & [80,120] & [120,160] & [160,200]\\
Avg.rate & & & & & \\
of.change & 1.35 & 0.80 & 0.48 & 0.28 & 0.17
\end{array}\right]$
Work Step by Step
The average rate of change of $f$ over the interval $[a, b]$ is
Average rate of change of $f\displaystyle \ \ =\frac{f(b)-f(a)}{b-a}$
The units of the average rate of change of $f$ are units of $f(x)$ per unit of $x$.
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We calculate the average rate of change in the table below:
