Complete the following steps:

• Identify at least one positive externality from running a donut shop.
• Identify at least one negative externality from running a donut shop.
• Explain how these positive and negative externalities could impact the donut shop's profits. (Hint: think subsidy for positive externality and tax for negative externality.)
• Draw two graphs that show the price of donuts before and after the positive and negative externality impacted the price of your donuts.