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Marlow Works

AP Microeconomics / Unit 6

Unit 6 · 8–13%

Market Failure and the Role of Government

Externalities, public goods, and inequality are cases where private markets miss social costs or benefits.

Start first lessonUnit practice

Topics

  • Negative and positive externalities
  • Public goods
  • Government intervention
  • Inequality and redistribution

Lessons

Key terms

Original practice

Marlow Works questions. If this unit does not have its own items yet, you will see other questions from the same course.

1 of 3Supply and Demand · medium · multiple choice

A binding price ceiling is set below equilibrium in the market for rental apartments. What is the most likely result?

Original Marlow Works item — not a College Board question.

Take your time—this is practice, not a test.

Review checklist

  1. 01Draw MSC or MSB when an externality is present.
  2. 02Identify the free-rider problem for a public good.
  3. 03Separate efficiency arguments from equity arguments.

Related resources

External links with reuse status. Marlow Works is independent and does not copy restricted exam or textbook material.

  • Official / link only

    AP Microeconomics course page

    Official six-unit framework for markets, costs, and market failure.

    College Board · All rights reserved · accessed 2026-10-01

    Open source

  • CC BY — attribution required

    Principles of Microeconomics: Scarcity and Social Provisioning

    Open microeconomics background for scarcity, markets, and elasticity.

    Open Textbook Library listing · CC BY · accessed 2026-10-01

    Open source

  • Official / link only

    FRED economic data

    Federal Reserve economic data. Terms vary by series; do not scrape or ingest.

    Federal Reserve Bank of St. Louis · Varies by series · accessed 2026-10-01

    Open source