Question 306258: The equations S = 5000 + 200x and
D = 9500 - 100x express the supply S and the
demand D, respectively, for a popular compact disc brand
in terms of its price x (in dollars).
a) Graph the equations on the same coordinate system.
b) What happens to the supply as the price increases?
c) What happens to the demand as the price increases?
d) The price at which supply and demand are equal is
called the equilibrium price.What is the equilibrium
price?
Answer by checkley77(12844)   (Show Source):
You can put this solution on YOUR website! S = 5000 + 200x
Y=200X+5,000 (RED LINE)
D = 9500 - 100x
Y=-100X+9,500 (GREEN LINE)
A)  (graph 300x300 pixels, x from -60 to 50, y from -500 to 10000, of TWO functions 200x +5000and -100x +9500).
B) What happens to the supply as the price increases?
The supply increases.
C) What happens to the demand as the price increases?
The demand decreases.
D) The price at which supply and demand are equal is
called the equilibrium price.What is the equilibrium
price? 7,900=200X+5,000
7,900=200X+5,000
200X=7,900-5,000
200X=2,900
X=2,900/200
x=$14.5 ans.
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