Question

The graph shows the sales (in millions of dollars) of Green Mountain Coffee Roasters from 2005 through 2013. Let $f(x)$ represent the sales in year $x .$ (Source: Green Mountain Coffee Roasters, Inc.) (a) Find $\frac{f(2013)-f(2005)}{2013-2005}$ and interpret the result in the context of the problem. (b) An approximate model for the function is $$S(t)=90.442 t^{2}-1075.25 t+3332.5,5 \leq t \leq 13$$ where $S$ is the sales (in millions of dollars) and $t=5$ represents 2005. Complete the table and compare the results with the data in the graph. $$\begin{array}{|l|l|l|l|l|l|l|l|l|l|} \hline t & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 \\ \hline S(t) & & & & & & & & & \\ \hline \end{array}$$

          The graph shows the sales (in millions of dollars) of Green Mountain Coffee Roasters from 2005 through 2013. Let $f(x)$ represent the sales in year $x .$ (Source: Green Mountain Coffee Roasters, Inc.)
(a) Find $\frac{f(2013)-f(2005)}{2013-2005}$ and interpret the result in the context of the problem.
(b) An approximate model for the function is
$$S(t)=90.442 t^{2}-1075.25 t+3332.5,5 \leq t \leq 13$$
where $S$ is the sales (in millions of dollars) and $t=5$ represents 2005. Complete the table and compare the results with the data in the graph.
$$\begin{array}{|l|l|l|l|l|l|l|l|l|l|}
\hline t & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 \\
\hline S(t) & & & & & & & & & \\
\hline
\end{array}$$

Added by Debbie B.

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