In: Economics
1) Given the following equations:
QD = 5,000 + 0.5 I + 0.2 A - 100P, and QS = -5000 + 100P
where Q is the quantity per year, P is price, I is income per household, and A is advertising expenditure.
a. If A = $10,000 and I = $25,000, what is the demand curve?
b. Given the demand curve in part a., what is equilibrium price and quantity?
c. If consumer incomes increase to $30,000, what will be the impact on equilibrium price and quantity?
2) Industry supply and demand are given by QD = 1000 - 2P and QS = 3P.
a. What is the equilibrium price and quantity?
b. At a price of $100, will there be a shortage or a surplus, and how large will it be?
c. At a price of $300, will there be a shortage or a surplus, and how large will it be?