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Exhibit 3-18 Supply and demand curves ​ ​ The market shown in Exhibit 3-18 is initially in equilibrium at E3. Changes in market conditions result in a new equilibrium at E4. This change is stated as a(n):

Which of the following will cause a movement upward along a supply curve?

Suppose ABC Corporation is willing to sell 100 shirts when the price is $10 and 200 shirts when the price is $15, but XYZ Inc is willing to sell 500 shirts when the price is $10 and 350 shirts when the price is $15. Which of the following statements about the two companies is correct?

Suppose that X and Y are substitute goods. If the price of good X increases, we can expect:

When the price of a good falls, consumers may increase the quantity consumed because they have greater total purchasing power. This statement describes the:

The use of a price system eliminates:     

Which of the following states the law of supply?

When the marginal cost is higher than the average total cost, 

The negative slope of the demand curve reflects the:

When there is a shortage of a product in a market the: