SILVER DOLLARS                                                                                                           SHEET 3

Application 3

Yousef likes to buy and sell coins at the flea market on weekends. He is especially interested in Susan B. Anthony silver dollars. By his own trial-and-error experiences and by information gained from other traders, Yousef has found the following data:

Selling Price

Number in Supply

Number in Demand

$1.40

10

90

$2.00

19

50

$3.00

42

25

$4.20

94

20

graph 2

  1. Graph the price-supply points on the graph above.
  2. Graph the price-demand points on the graph above.
  3. Use the graph to estimate the price in equilibrium.
  4. Sketch in a line that comes close to containing the price-supply points.
  5. Sketch in a line that comes close to containing the price-demand points.
  6. What are the coordinates of the point where these two lines intersect? How does this answer compare with your answer in question 3?

                                                                                                                        From the Mathematics Teacher, October 1991

 

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