Question

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Answer 1

Answer:

Average rate of change =250

Step-by-step explanation:

Formula to determine average rate of change of the function,

Average rate of change = $\frac{f(x_2)-f(x_1)}{x_2-x_1}$

Where $x_1$ and $x_2$ are the points representing number of years after year 2000.

Since $x_1$ = 5 and $x_2=19$,

$f(x_2)=650$

And $f(x_1)=300$

Now average rate of change = $\frac{650-300}{19-5}$

                                                = $\frac{350}{14}$

                                                = 250

Therefore, average rate of change of the number of influenza cases from 2005 to 2019 is 250.