At a certain factory, it is determined that an output of Q units is to be expected when L worker-hours of labor are employed, where Q(L) = 3600I a. Find the average rate of change of output. as the labor employment changes from L = 3025 worker-hours to 3125 worker- hours. b. Use calculus to find the instantaneous rate of change of output with respect to labor level when L = 3025. O about 32.46 units per worker-hour; about 32.2 units per worker-hour about 32.6 units per worker-hour; about 32.2 units per worker-hour about 32.46 units per worker-hour; about 32.73 units per worker-hour about 32.6 units per worker-hour; about 32.73 units per worker-hour