Consider Urban Artisans, LLC. It has a workshop with 2 machineries that operate 8 hours per day (K=2). Also, it currently employs 5 artisans that also work for 8 hours per day (L=5) and get paid $30 per hour (W=30). The workshop manager is considering an increase in the number of artisans. In fact, she is thinking of increasing the number of employees that work in the workshop to, perhaps, 9 artisans. To help her make a decision, we are going to rely on a recent estimate of their production function: Q=4.5*K0.8*L0.2. We also use the vectors below, describing the short-run variations in labor input: K L 2 6 2 7 2 8 2 9