[{"id": 1, "type": "multiple_choice", "options": ["x = 19", "x = 18", "x = 57", "x = 20"], "question": "Solve for x: 3x = 57", "correct_answer": "x = 19"}, {"id": 2, "type": "multiple_choice", "options": ["x = 80", "x = 10", "x = 9", "x = 11"], "question": "Solve for x: 8x = 80", "correct_answer": "x = 10"}, {"id": 3, "type": "true_false", "question": "The square root of 16 is 4.", "correct_answer": "True"}, {"id": 4, "type": "short_answer", "question": "Evaluate: -2 + (-4)", "correct_answer": "-6"}, {"id": 5, "type": "multiple_choice", "options": ["30 square units", "56 square units", "15 square units", "63 square units"], "question": "What is the area of a rectangle with length 7 and width 8?", "correct_answer": "56 square units"}, {"id": 6, "type": "true_false", "question": "The square root of 64 is 8.", "correct_answer": "True"}, {"id": 7, "type": "short_answer", "question": "What is 50% of 130?", "correct_answer": "65"}, {"id": 8, "type": "multiple_choice", "options": ["70 square units", "84 square units", "38 square units", "19 square units"], "question": "What is the area of a rectangle with length 14 and width 5?", "correct_answer": "70 square units"}]