[{"id": 1, "type": "multiple_choice", "options": ["x = 19", "x = 21", "x = 20", "x = 160"], "question": "Solve for x: 8x = 160", "correct_answer": "x = 20"}, {"id": 2, "type": "short_answer", "question": "Evaluate: 10 + (-4)", "correct_answer": "6"}, {"id": 3, "type": "multiple_choice", "options": ["x = 6", "x = 5", "x = 54", "x = 7"], "question": "Solve for x: 9x = 54", "correct_answer": "x = 6"}, {"id": 4, "type": "multiple_choice", "options": ["88 square units", "38 square units", "19 square units", "99 square units"], "question": "What is the area of a rectangle with length 11 and width 8?", "correct_answer": "88 square units"}, {"id": 5, "type": "true_false", "question": "The square root of 25 is 5.", "correct_answer": "True"}, {"id": 6, "type": "multiple_choice", "options": ["84 square units", "90 square units", "20 square units", "40 square units"], "question": "What is the area of a rectangle with length 6 and width 14?", "correct_answer": "84 square units"}, {"id": 7, "type": "short_answer", "question": "What is 70% of 30?", "correct_answer": "21"}, {"id": 8, "type": "true_false", "question": "The square root of 144 is 12.", "correct_answer": "True"}]