1 answer
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The correct interpretation is: The parking fee rises by $6 with each additional hour.
This is because the slope of the graph, which represents the rate of change, is determined by the rise over the run. In this case, the rise is $24 (44 - 20) and the run is 4 hours (6 - 2). Therefore, the rate of change in the parking fee for each additional hour of parking is $24/4 = $6.