{
  "lesson": "Math",
  "topic": "Algebra",
  "questions": [
    {
      "text": "If 2x + 3 = 11, what is x?",
      "imageUrl": null,
      "options": [
        { "text": "3" },
        { "text": "4" },
        { "text": "5" },
        { "text": "6" },
        { "text": "7" }
      ],
      "correctIndex": 1,
      "note": "Solve: 2x = 8, so x = 4."
    },
    {
      "text": "Which expression is equivalent to 3(x + 2)?",
      "imageUrl": null,
      "options": [
        { "text": "3x + 2" },
        { "text": "3x + 6" },
        { "text": "x + 6" },
        { "text": "x + 2" },
        { "text": "3x + 3" }
      ],
      "correctIndex": 1,
      "note": "Distribute 3: 3x + 6."
    },
    {
      "text": "If y = 5, what is 2y - 1?",
      "imageUrl": null,
      "options": [
        { "text": "7" },
        { "text": "8" },
        { "text": "9" },
        { "text": "10" },
        { "text": "11" }
      ],
      "correctIndex": 2,
      "note": null
    }
  ]
}