Darrell tracked the number of employees in his company over a six-year period. In the graph, x represents years since 2006 and y represents the number of employees. The coordinates for one data point, P, are shown.
P(6, 75)
80
60
40
20
6
0 1 2 3
Find the average rate of change in the number of employees per year by using the data for year 0 and year 6. Round your answer to the
nearest tenth.