Ta có phương trình cung – cầu của một quốc gia như sau: QSX = 20 + 5PX; QDX = 80 – 10PX
Trong đó QDX, QSX là số lượng sản phẩm X tính bằng 1 đơn vị, PX là giá cả sản phẩm tính bằng 1000 USD. Giả thiết quốc gia này là 1 nước nhỏ và giá thế giới là 6000 USD.
1. Thị trường sản phẩm của quốc gia khi mở cửa mậu dịch tự do là:
a) PX = $6000 ; SX = 50X ; TD = 20X ; XK = 30X
b) PX = $4000 ; SX = 40X ; TD = 40X ; XK = 0X
c) PX = $6000 ; SX = 100X; TD = 20X ; XK = 80X
d) PX = $4000 ; SX = 50X ; TD = 20X ; XK = 30X

Employees at a library check out books to patrons. books have an isbn and a name. the library sometimes has multiple copies of the same book. books have one or more authors. a patron is an individual who has an active (non-expired) library card. for each library card, we store the person's first and last names and their address. for each employee, we store their employee id, current salary, first and last name and their address. we also store the employee id of their current manager. each time we check out a book to a patron we need to store the date of the transaction, the employee who checked out the book to the patron, and the library card of the patron. some employees have library cards. if an employee patron turns in a book late, the fine that they pay is a percentage of their salary. some employees are authors who have library cards—they are allowed to check out as many books as they like.

Your family business uses a secret recipe to produce salsa and distributes it through both smaller specialty stores and chain supermarkets. the chain supermarkets have been demanding sizable discounts, but you do not want to drop your prices to the specialty stores. true or false: the robinson-patman act limits your ability to offer discounts to the chain supermarkets while leaving the price high for the smaller stores. true false

Which of the following is one disadvantage of renting a place to live compared to buying a home? a. tenants have to pay for all repairs to the building. b. the landlord covers the expenses of maintaining the property. c. residents can't alter their living space without permission. d. rent is generally more than monthly mortgage payments.