经济学 - 2026 进行中

科目: 经济学
级别: IX
类别: 大学生
测试题目: 英语
问题示例: A household's income rises from $4,000 to $4,400, while its monthly spending on restaurant meals increases from $200 to $220. What is the income elasticity of demand for restaurant meals? 1.0, 0.5, 1.5, 2.0