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Use the data in Example 4.3.9 to find the rate of change in Oregon invasive cancer diagnoses between 1999 and 2002. Just give the numerical value; the units are provided.

$\,\frac{\text{diagnoses}}{\text{year}}$

And what was the rate of change between 2003 and 2011?

$\,\frac{\text{diagnoses}}{\text{year}}$

Solution

To find the rate of change between 1999 and 2002, calculate

$\frac{17887-17599}{2002-1999}=96\text{.}$

To find the rate of change between 2003 and 2011, calculate

$\frac{20636-17559}{2011-2003}=384.625\text{.}$