[
  {
    "Question": "If f(x) = 3x + 2, what is the value of f(4)?",
    "Answer": "B",
    "Explanation": "Substitute x = 4 into the function: f(4) = 3(4) + 2 = 12 + 2 = 14.",
    "PictureURL": "",
    "OptionA": "12",
    "OptionB": "14",
    "OptionC": "10",
    "OptionD": "8",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 1,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "Given the function g(x) = x² - 5, what is g(-3)?",
    "Answer": "C",
    "Explanation": "Calculate g(-3): (-3)² - 5 = 9 - 5 = 4.",
    "PictureURL": "",
    "OptionA": "-8",
    "OptionB": "2",
    "OptionC": "4",
    "OptionD": "-4",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 2,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If h(x) = 2x + 1, which value of x makes h(x) = 9?",
    "Answer": "A",
    "Explanation": "Set 2x + 1 = 9, then 2x = 8, so x = 4.",
    "PictureURL": "",
    "OptionA": "4",
    "OptionB": "5",
    "OptionC": "3",
    "OptionD": "2",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Interpretation",
    "Item": 3,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "What is the value of f(0) if f(x) = 7x - 3?",
    "Answer": "D",
    "Explanation": "Substitute x = 0: f(0) = 7(0) - 3 = -3.",
    "PictureURL": "",
    "OptionA": "7",
    "OptionB": "3",
    "OptionC": "0",
    "OptionD": "-3",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 4,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If f(x) = x² + 4x + 4, what is f(-2)?",
    "Answer": "B",
    "Explanation": "Calculate f(-2): (-2)² + 4(-2) + 4 = 4 - 8 + 4 = 0.",
    "PictureURL": "",
    "OptionA": "4",
    "OptionB": "0",
    "OptionC": "-4",
    "OptionD": "8",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 5,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "For the function f(x) = 5x - 7, what is the output when the input is 3?",
    "Answer": "C",
    "Explanation": "Substitute x = 3: f(3) = 5(3) - 7 = 15 - 7 = 8.",
    "PictureURL": "",
    "OptionA": "12",
    "OptionB": "10",
    "OptionC": "8",
    "OptionD": "15",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 6,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If f(x) = 2x² and f(a) = 18, what is the value of a?",
    "Answer": "B",
    "Explanation": "2a² = 18, so a² = 9, thus a = 3 or a = -3. Since only one answer is requested, 3 is the positive root.",
    "PictureURL": "",
    "OptionA": "6",
    "OptionB": "3",
    "OptionC": "9",
    "OptionD": "4",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Interpretation",
    "Item": 7,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "What is the value of f(2) if f(x) = 1/(x + 1)?",
    "Answer": "A",
    "Explanation": "Substitute x = 2: f(2) = 1/(2 + 1) = 1/3.",
    "PictureURL": "",
    "OptionA": "1/3",
    "OptionB": "3",
    "OptionC": "1/2",
    "OptionD": "2",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 8,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If f(x) = |x - 3|, what is f(1)?",
    "Answer": "C",
    "Explanation": "Calculate f(1): |1 - 3| = |-2| = 2.",
    "PictureURL": "",
    "OptionA": "4",
    "OptionB": "1",
    "OptionC": "2",
    "OptionD": "3",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 9,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "Given f(x) = 4x - 1, for which x is f(x) = 15?",
    "Answer": "D",
    "Explanation": "Set 4x - 1 = 15, so 4x = 16, and x = 4.",
    "PictureURL": "",
    "OptionA": "3",
    "OptionB": "5",
    "OptionC": "2",
    "OptionD": "4",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Interpretation",
    "Item": 10,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If f(x) = 3x² and f(5) = ?",
    "Answer": "B",
    "Explanation": "Calculate f(5): 3 × 5² = 3 × 25 = 75.",
    "PictureURL": "",
    "OptionA": "15",
    "OptionB": "75",
    "OptionC": "25",
    "OptionD": "30",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 11,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "For f(x) = 2x + 3, what is the value of x if f(x) = 11?",
    "Answer": "A",
    "Explanation": "Set 2x + 3 = 11, so 2x = 8, and x = 4.",
    "PictureURL": "",
    "OptionA": "4",
    "OptionB": "5",
    "OptionC": "3",
    "OptionD": "6",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Interpretation",
    "Item": 12,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If f(x) = x³ and f(-2) = ?",
    "Answer": "D",
    "Explanation": "Calculate f(-2): (-2)³ = -8.",
    "PictureURL": "",
    "OptionA": "8",
    "OptionB": "6",
    "OptionC": "-6",
    "OptionD": "-8",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 13,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "What is the output of f(x) = 10 - x when x = 7?",
    "Answer": "C",
    "Explanation": "Substitute x = 7: f(7) = 10 - 7 = 3.",
    "PictureURL": "",
    "OptionA": "17",
    "OptionB": "7",
    "OptionC": "3",
    "OptionD": "10",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Evaluation",
    "Item": 14,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  },
  {
    "Question": "If f(x) = 2x - 4 and f(x) = 0, what is x?",
    "Answer": "B",
    "Explanation": "Set 2x - 4 = 0, so 2x = 4, and x = 2.",
    "PictureURL": "",
    "OptionA": "4",
    "OptionB": "2",
    "OptionC": "-2",
    "OptionD": "0",
    "TestName": "Functions – evaluation and interpretation",
    "Content Type": "Practice Test",
    "Title": "Function Interpretation",
    "Item": 15,
    "Type": "multiple choice",
    "Path": "Functions/Evaluation and Interpretation"
  }
]