[{"id": 1, "type": "multiple_choice", "options": ["81 square units", "36 square units", "90 square units", "18 square units"], "question": "What is the area of a rectangle with length 9 and width 9?", "correct_answer": "81 square units"}, {"id": 2, "type": "multiple_choice", "options": ["x = 8", "x = 14", "x = 6", "x = 7"], "question": "Solve for x: 2x = 14", "correct_answer": "x = 7"}, {"id": 3, "type": "multiple_choice", "options": ["150 square units", "50 square units", "160 square units", "25 square units"], "question": "What is the area of a rectangle with length 10 and width 15?", "correct_answer": "150 square units"}, {"id": 4, "type": "multiple_choice", "options": ["6:6", "6:18", "5:9", "2:18"], "question": "If the ratio is 2:6, what is the equivalent ratio when multiplied by 3?", "correct_answer": "6:18"}, {"id": 5, "type": "short_answer", "question": "Evaluate: 4 + (-3)", "correct_answer": "1"}, {"id": 6, "type": "multiple_choice", "options": ["24 square units", "156 square units", "144 square units", "48 square units"], "question": "What is the area of a rectangle with length 12 and width 12?", "correct_answer": "144 square units"}, {"id": 7, "type": "multiple_choice", "options": ["x = 15", "x = 16", "x = 17", "x = 112"], "question": "Solve for x: 7x = 112", "correct_answer": "x = 16"}, {"id": 8, "type": "multiple_choice", "options": ["x = 102", "x = 18", "x = 16", "x = 17"], "question": "Solve for x: 6x = 102", "correct_answer": "x = 17"}]