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To solve the problem based on the given supply and demand graph, we need to calculate the consumer surplus, producer surplus, and total surplus.

### Step 1: Identify the equilibrium point
The graph shows that the equilibrium quantity is 5, and the equilibrium price is $4.5. This is where the supply and demand curves intersect.

### Step 2: Consumer Surplus Calculation
- Consumer surplus is the area between the demand curve and the price, up to the equilibrium quantity.
- The formula for the area of a triangle is: 
  \[
  \text{Area of triangle} = \frac{1}{2} \times \text{base} \times \text{height}
  \]
- In this case, the height is the difference between the maximum price on the demand curve ($9) and the equilibrium price ($4.5):
  \[
  \text{Height} = 9

Consider the accompanying supply and demand graph. What is the value of consumer surplus? What is the value of producer surplus? What is the value of total surplus, also known as the social or economic surplus?

Learn how to calculate consumer surplus, producer surplus, and total surplus using a supply and demand graph. The equilibrium quantity is 5, and the equilibrium price is $4.5, with calculations based on the areas of triangles representing surpluses. This problem is suitable for Grades 10-12 economics or business students.

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