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

Like many students at university, you may be unhappy about the results you attain in exams. you may feel that even with all you are doing there must be something more -- or different-- you could be doing to get better grades. we have all at some time or other heard of that student who only studies a couple of hours for final exams and scores a's every time. we stand in awe of those who seem to breeze through without undue effort and seem to need very little in the way of studying to nail an exam. the reasons for success, in what i think are the vast majority of cases, are less esoteric than many students think: successful students consistently apply a series of productive strategies with view to attaining clearly identified learning and grade goals throughout the academic term.

Answerin vivo exposure;

What exactly are you asking? i’d love to , explain, what you are asking : )