In this problem, we have a table that shows living wages in Rochester. This study was made over a 5 year period. For a function of
, the average rate of change can be found as follows:

So, let's find the two ARC.
1. Average Rate of Change in the number of living wage jobs from 1997 to 1999:
In this item, we have that:

Therefore, the ARC is:

So, from 1997 to 1999 the number of living wage jobs increases at a rate of 55 jobs per year
2. Average Rate of Change in the number of living wage jobs from 1999 to 2001:
In this item, we have that:

Therefore, the ARC is:

So, from 1999 to 2001 the number of living wage jobs increases at a rate of 27.5 jobs per year