VL Consultants is a consulting firm working with local governments. They use data to calculate a "Living Wage

Measure" $($LWM$).$ The LWM is the number of jobs in a region that provide a salary sufficient to be considered a

living wage. The LWM is expressed as the number of such jobs for every $1000$ adult residents of the region.

For example, if the LWM for an area was report to be $"850$ jobs" then we would interpret this to mean there are $850$

living wage jobs for every $1000$ adults in the region.

The following chart shows the LWM for Freedonia over a recent $5-$year period.

$($a$)$ Compute the average rate of change in the LWM from $2012$ to $2014$ and use your answer to complete the

following sentence:

From to $,$ Freedonia's LWM increased by an average of jobs per year.

$($b$)$ Compute the average rate of change in the LWM from $2014$ to $2016$ and use your answer to complete the

following sentence:

Between and the LWM for Freedonia increased by jobs per year, on average.