Question : 85) Assume that the hourly price for the services of : 1387414

85) Assume that the hourly price for the services of personal trainers has risen and sales of these services have also risen. One can conclude that

A) the law of demand has been violated.

B) the number of personal trainers has increased.

C) the demand for personal trainers has increased.

D) personal trainers are deliberately charging high prices because they provide services for wealthy clients.

86) Assume that the price for lawn care has fallen and sales of lawn care services have also fallen. One can conclude that

A) the law of supply has been violated.

B) the number of lawn care service companies has increased.

C) the demand for lawn care service has decreased.

D) lawn care services are deliberately charging low prices because they want to discourage people from maintaining their own lawns.

87) Prices of commercial airline tickets (assume that this is a normal good) have fallen in recent months. Over this same period, the price of jet fuel has risen and consumer incomes have fallen. Which of the following best explains the falling prices of airline tickets?

A) The supply curve for airline tickets has shifted to the left while the demand curve for airline tickets has shifted to the left.

B) The demand curve for airline tickets has shifted to the left more than the supply curve has shifted to the left.

C) The demand curve and the supply curve for airline tickets have both shifted to the right.

D) The supply curve for airline tickets has shifted to the left more than the demand curve has shifted to the left.

88) Prices of smartphones (assume that this is a normal good) have fallen in recent years. Over this same period, the price of the components used to produce smartphones has also fallen and consumer incomes have risen. Which of the following best explains the falling prices of smartphones?

A) The supply curve for smartphones has shifted to the right while the demand curve for smartphones has shifted to the left.

B) The demand curve for smartphones has shifted to the right more than the supply curve has shifted to the right.

C) The demand curve and the supply curve for smartphones have both shifted to the left.

D) The supply curve for smartphones has shifted to the right more than the demand curve has shifted to the right.

89) In recent years the cost of producing wines in the U.S. has increased largely due to rising rents for vineyards. At the same time, more and more Americans prefer wine over beer. Which of the following best explains the effect of these events in the wine market?

A) The supply curve has shifted to the left and the demand curve has shifted to the right. As a result there has been an increase in the equilibrium quantity and an uncertain effect on the equilibrium price.

B) Both the supply and demand curves have shifted to the right. As a result, there has been an increase in the equilibrium price and an uncertain effect on the equilibrium quantity.

C) Both the supply and demand curves have shifted to the right. As a result, there has been an increase in both the equilibrium price and the equilibrium quantity.

D) The supply curve has shifted to the left and the demand curve has shifted to the right. As a result, there has been an increase in the equilibrium price and an uncertain effect on the equilibrium quantity.

90) Assume that in recent years the cost of producing microbrew beer in the U.S. has decreased largely due to technological improvements. At the same time, more and more Americans prefer microbrew beer over wine. Which of the following best explains the effect of these events in the microbrew beer market?

A) The supply curve has shifted to the right and the demand curve has shifted to the left. As a result there has been a decrease in the equilibrium quantity and an uncertain effect on the equilibrium price.

B) Both the supply and demand curves have shifted to the right. As a result, there has been an increase in the equilibrium quantity and an uncertain effect on the equilibrium price.

C) Both the supply and demand curves have shifted to the right. As a result, there has been an increase in both the equilibrium price and the equilibrium quantity.

D) The supply curve has shifted to the left and the demand curve has shifted to the right. As a result, there has been an increase in the equilibrium price and an uncertain effect on the equilibrium quantity.

91) Studies have shown that drinking one glass of red wine per day may help prevent heart disease. Assume this is true, and a fungal disease destroys a large portion of the grape harvest of California vineyards. In the market for red wine, these two developments would

A) increase demand and increase supply, resulting in an increase in the equilibrium quantity and a decrease in the equilibrium price of red wine.

B) increase demand and decrease supply resulting in a decrease in both the equilibrium quantity and the equilibrium price of red wine.

C) increase demand and decrease supply, resulting in an increase in the equilibrium price and an uncertain effect on the equilibrium quantity of red wine.

D) increase demand and decrease supply, resulting in an increase in both the equilibrium price and the equilibrium quantity of red wine.

92) A decrease in the demand for eggs due to changes in consumer tastes, accompanied by a decrease in the supply of eggs as a result of an outbreak of Avian flu, will result in

A) a decrease in the equilibrium quantity of eggs and no change in the equilibrium price.

B) a decrease in the equilibrium price of eggs and no change in the equilibrium quantity.

C) a decrease in the equilibrium price of eggs; the equilibrium quantity may increase or decrease.

D) a decrease in the equilibrium quantity of eggs; the equilibrium price may increase or decrease.

93) An increase in the demand for peanuts due to changes in consumer tastes, accompanied by an increase in the supply of peanuts as a result of favorable growing conditions, will result in

A) an increase in the equilibrium quantity of peanuts and no change in the equilibrium price.

B) an increase in the equilibrium price of peanuts and no change in the equilibrium quantity.

C) an increase in the equilibrium price of peanuts; the equilibrium quantity may increase or decrease.

D) an increase in the equilibrium quantity of peanuts; the equilibrium price may increase or decrease.

94) During the 1990s positive technological change in the production of chicken caused the price of chicken to fall. Holding everything else constant, how would this affect the market for pork (a substitute for chicken)?

A) The supply of pork would increase, and the equilibrium price of pork would decrease.

B) The demand for pork would decrease, and the equilibrium price of pork would decrease.

C) The demand for pork would increase because consumers could afford to buy more chicken and pork.

D) The demand for pork would decrease, and the equilibrium price of pork would increase.