In the above table, the marginal propensity to save when disposable income changes from $5,000 to $6,000 is

Suppose the current price of barley is $7 per bushel and at that price 100,000 bushels are grown by a Colorado farmer

If the price of barley rises to $8 and quantity supplied increases to 130,000 bushels, then using the midpoint method, the price elasticity of supply for barley equals A) 13.33. B) 26.78. C) 1.96. D) 0.51. E) zero.

Refer to the accompanying figure. Which of the following is true?

A. Point A is efficient because it is farthest from the origin. B. Point F is the most efficient because medical care is the highest there. C. Points B, C, E and F are efficient. D. Point D is efficient because it requires using the fewest resources.