[{"id": 1, "type": "multiple_choice", "options": ["117 square units", "130 square units", "44 square units", "22 square units"], "question": "What is the area of a rectangle with length 13 and width 9?", "correct_answer": "117 square units"}, {"id": 2, "type": "short_answer", "question": "Evaluate: -6 + (-1)", "correct_answer": "-7"}, {"id": 3, "type": "true_false", "question": "The square root of 9 is 3.", "correct_answer": "True"}, {"id": 4, "type": "multiple_choice", "options": ["16 square units", "32 square units", "60 square units", "48 square units"], "question": "What is the area of a rectangle with length 12 and width 4?", "correct_answer": "48 square units"}, {"id": 5, "type": "multiple_choice", "options": ["48 square units", "24 square units", "135 square units", "144 square units"], "question": "What is the area of a rectangle with length 9 and width 15?", "correct_answer": "135 square units"}, {"id": 6, "type": "multiple_choice", "options": ["8:12", "32:3", "12:7", "32:12"], "question": "If the ratio is 8:3, what is the equivalent ratio when multiplied by 4?", "correct_answer": "32:12"}, {"id": 7, "type": "short_answer", "question": "Evaluate: -1 + (6)", "correct_answer": "5"}, {"id": 8, "type": "multiple_choice", "options": ["x = 9", "x = 8", "x = 10", "x = 18"], "question": "Solve for x: 2x = 18", "correct_answer": "x = 9"}]