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. 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

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters