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

Anew equipment has been proposed by engineers to increase the productivity of a certain manual welding operation. the investment cost is $25,000, and the equipment will have a market value of $5,000 at the end of a study period of five years. increased productivity attributable to the equipment will amount to $10,000 per year after operating costs have been subtracted from the revenue generated by the additional production. if marr is 10%, is investing in this equipment feasible? use annual worth method.

Neon light company of kansas city ships lamps and lighting appliances throughout the country. ms. neon has determined that through the establishment of local collection centers around the country, she can speed up the collection of payments by one and one-half days. furthermore, the cash management department of her bank has indicated to her that she can defer her payments on her accounts by one-half day without affecting suppliers. the bank has a remote disbursement center in florida. a. if neon light company has $2.90 million per day in collections and $1.18 million per day in disbursements, how many dollars will the cash management system free up?

Joe finally found a house for sale that he liked. which factor could increase the price of the house he likes? a. both he and the seller each have a real estate agent. b. a home inspector finds faulty wiring in the house. c. the house has been for sale for almost a year. d. several buyers all want that same house.