Total fixed costs - Total variable costs - Labor productivity - Total Costs - Average Total Cost - Average Fixed Cost - Average Variable Cost - Marginal Cost - Economies of Scale - Diseconomies of Scale - Constant Returns to Scale - Short Run - Long Run A. Total fixed cost divided by the quantity produced B. Average Fixed Cost plus average variable cost C. Output per worker per hour D. Costs per unit of output that are constant as the scale of production increases. E. Time enough to change all of the resources for production F. Costs that vary with level of production G. Total fixed costs plus total variable costs H. The addition to total cost from producing one more unit I. Addition to output from each additional worker diminishes J. Costs that don't change as the level of production increases or decreases K. Time enough to change only some of the resources for production L. Decreases in average cost that accompany increases in scale of output M. Total variable cost divided by the quantity produced