... 65Long-run average costs (LAC), 10 7 10 9Long-run costs, 10 7 10 9Long-run equilibrium, 11 4Loss, 11 4 15 0 PRINCIPLES OF ECONOMICS to the firm s demand for productive resources. Because of this, ... Savings, 65Scarcity, 3–5market system, 7–8Services, 4Short run, 10 5Short-run average costs (SAC), 10 7 10 9Short-run costs, 10 5 10 7Short-run loss, 11 4Short-run profit, 11 4Stabilizers, ... 48–49Collusion, 12 8Competition, 11 1 11 4Competitive equilibrium real-wage rate, 14 0 14 1Consumer demand, 96 10 0Consumer price index (CPI), 31 32Consumer surplus, 99 10 0Consumption, 37–40Cost-push...