Use the orange points (square symbol) to plot the initial short-run industry supply curve when there are 10 s in the market. (Hint: You can disregard the portion of the supply curve that corresponds to prices where there is no output since this is the industry supply curve.) Next, use the purple points (diamond symbol) to plot the short-run industry supply curve when there are 15 firms. Finally, use the green points (triangle symbol) to plot the short-run industry supply curve when there are 20 firms. 100 90 Supply (10 firms) 80 70 60 Supply (15 firms) 50 40 Supply (20 firms) Demand 30 20 10 + 125 250 375 so0 625 750 875 1000 1125 1250 QUANTITY (Thousands of tons) If there were 10 firms in this market, the short-run equilibrium price of steel would be s - Therefore, in the long run, firms would | per ton. At that price, firms in this industry would the steel market. Because you know that competitive firms earn economic profit in the long run, you know the long-run equilibrium price must be ]per ton. From the graph, you can see that this means there will be firms operating in the steel industry in long-run equilibrium. True or False: Assuming implicit costs are positive, each of the firms operating in this industry in the long run earns positive accounting profit. O True False PRICE (Dollars per ton)

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**Competitive Market Analysis for Steel Production Costs**

In the competitive market for steel, each firm in the industry, regardless of the number of firms, encounters identical cost curves. The following graph illustrates these costs, which include the marginal cost (MC), average total cost (ATC), and average variable cost (AVC).

**Graph Analysis:**

- **Axes:**
  - The x-axis represents the "QUANTITY" of steel produced, measured in thousands of tons (ranging from 0 to 100).
  - The y-axis indicates "COSTS" in dollars per ton (ranging from 0 to 100).

- **Curves:**
  - **Marginal Cost (MC):** Illustrated by the orange curve, starts high, dips significantly around 30 thousand tons, and rises steeply again.
  - **Average Total Cost (ATC):** Shown in green, descending initially, reaches a minimum point around 40-50 thousand tons, then ascends.
  - **Average Variable Cost (AVC):** Shown in purple, follows a similar shape to the ATC but starts and remains lower, also reaching its lowest around 40-50 thousand tons before increasing.

Each curve is marked with square points highlighting significant intersections or points of interest where these costs interact or change trends.

In understanding this graph, firms can determine the most cost-effective production levels and make informed decisions to maximize efficiency and profitability in the steel market.
Transcribed Image Text:**Competitive Market Analysis for Steel Production Costs** In the competitive market for steel, each firm in the industry, regardless of the number of firms, encounters identical cost curves. The following graph illustrates these costs, which include the marginal cost (MC), average total cost (ATC), and average variable cost (AVC). **Graph Analysis:** - **Axes:** - The x-axis represents the "QUANTITY" of steel produced, measured in thousands of tons (ranging from 0 to 100). - The y-axis indicates "COSTS" in dollars per ton (ranging from 0 to 100). - **Curves:** - **Marginal Cost (MC):** Illustrated by the orange curve, starts high, dips significantly around 30 thousand tons, and rises steeply again. - **Average Total Cost (ATC):** Shown in green, descending initially, reaches a minimum point around 40-50 thousand tons, then ascends. - **Average Variable Cost (AVC):** Shown in purple, follows a similar shape to the ATC but starts and remains lower, also reaching its lowest around 40-50 thousand tons before increasing. Each curve is marked with square points highlighting significant intersections or points of interest where these costs interact or change trends. In understanding this graph, firms can determine the most cost-effective production levels and make informed decisions to maximize efficiency and profitability in the steel market.
This educational module involves plotting short-run industry supply curves for the steel market under different market conditions. The graph provided shows the relationship between price (in dollars per ton) and quantity (in thousands of tons).

### Graph Details:

- **Axes:**
  - **X-axis:** Quantity (Thousands of tons, ranging from 0 to 1250).
  - **Y-axis:** Price (Dollars per ton, ranging from 0 to 100).

- **Curves and Points:**
  - **Demand Curve:** Illustrated as a continuous blue line showing a downward slope, indicating the typical inverse relationship between price and quantity demanded.
  - **Supply Curves:** Represented by three sets of points with different colors:
    - **Orange Squares:** Supply curve for 10 firms.
    - **Purple Diamonds:** Supply curve for 15 firms.
    - **Green Triangles:** Supply curve for 20 firms.
  
### Instructions:
- Use the orange, purple, and green points to plot the short-run industry supply curves for 10, 15, and 20 firms, respectively. Disregard portions of the supply curves where no output exists.

### Questions:

1. **Market with 10 Firms:**
   - Determine the short-run equilibrium price per ton of steel and predict firm behavior at this price.
   - Decide whether firms enter or exit the market in the long run.

2. **Long-Run Analysis:**
   - Determine the long-run equilibrium price, considering competitive markets yield zero economic profit in the long run.
   - Calculate the number of firms operating in long-run equilibrium based on the graph.

3. **True or False:**
   - Evaluate whether each firm in the industry earns positive accounting profit in the long run, assuming positive implicit costs.

This exercise helps in understanding competitive markets and equilibrium concepts in microeconomics.
Transcribed Image Text:This educational module involves plotting short-run industry supply curves for the steel market under different market conditions. The graph provided shows the relationship between price (in dollars per ton) and quantity (in thousands of tons). ### Graph Details: - **Axes:** - **X-axis:** Quantity (Thousands of tons, ranging from 0 to 1250). - **Y-axis:** Price (Dollars per ton, ranging from 0 to 100). - **Curves and Points:** - **Demand Curve:** Illustrated as a continuous blue line showing a downward slope, indicating the typical inverse relationship between price and quantity demanded. - **Supply Curves:** Represented by three sets of points with different colors: - **Orange Squares:** Supply curve for 10 firms. - **Purple Diamonds:** Supply curve for 15 firms. - **Green Triangles:** Supply curve for 20 firms. ### Instructions: - Use the orange, purple, and green points to plot the short-run industry supply curves for 10, 15, and 20 firms, respectively. Disregard portions of the supply curves where no output exists. ### Questions: 1. **Market with 10 Firms:** - Determine the short-run equilibrium price per ton of steel and predict firm behavior at this price. - Decide whether firms enter or exit the market in the long run. 2. **Long-Run Analysis:** - Determine the long-run equilibrium price, considering competitive markets yield zero economic profit in the long run. - Calculate the number of firms operating in long-run equilibrium based on the graph. 3. **True or False:** - Evaluate whether each firm in the industry earns positive accounting profit in the long run, assuming positive implicit costs. This exercise helps in understanding competitive markets and equilibrium concepts in microeconomics.
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