About 1 out of every _____ black Americans is poor.

Based on the data in the table above, in the adjustment towards the long-run equilibrium

A) money wage rates will rise. B) the aggregate demand curve will shift leftward. C) the short-run aggregate supply curve will shift leftward. D) the short-run aggregate supply curve will shift rightward.

The above table shows the marginal benefits and costs from production of fertilizer. There are no external benefits. If the market is perfectly competitive and unregulated, the equilibrium output will be

A) 2,000 tons. B) 3,000 tons. C) 4,000 tons. D) 5,000 tons.