Tại sao phải mô hình hóa bài toán kinh tế

Assume the total cost of a college education will be $250,000 when your child enters college in 17 years. you presently have $69,000 to invest. what annual rate of interest must you earn on your investment to cover the cost of your child’s college education? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

In 1948, the president of the united states earned a salary of $75,000. in 2000, the president earned a salary of $400,000. knowing that the cpi for 1948 is 24.1 and the cpi for 2000 is 172.2, convert the 1948 salary to constant 2000 dollars. when comparing constant dollar amounts, whose salary was worth more--harry truman, president in 1948, or bill clinton, president in 2000

Which type of unemployment would increase if workers lost their jobs because their positions were replaced by an automated process? a) cyclical b) frictional c) international d) structural