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In: Economics

1) Given the following equations:    QD = 5,000 + 0.5 I + 0.2 A -...

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?

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