Trên thị trường sản phẩm X có 100 người mua và 50 người bán, những người mua và bán tự do gia nhập thị trường. Hàm số cầu của mỗi người mua là như nhau và có dạng : P=-1/2Q+20 và tất cả những người bán đều có hàm tổng chi phí như nhau :TC=Q^2+2Q+40. Xác định hàm cung và cầu thị trường

When used-car dealers signal the quality of a used car with a warranty, a. buyers believe the signal because the cost of a false signal is high b. it is not rational to believe the signal because some used-car dealers are crooked c. the demand for lemons is eliminated d. the price of a lemon rises above the price of a good used car because warranty costs on lemons are greater than warranty costs on good used cars

James is an employee in the widget inspection department of xyz systems, a government contractor. james was part of a 3-person inspection team that found a particular batch of widgets did not meet the exacting requirements of the u. s. government. in order to meet the tight deadline and avoid penalties under the contract, james' boss demanded that the batch of widgets be sent in fulfillment of the government contract. when james found out, he went to the vice president of the company and reported the situation. james was demoted by his boss, and no longer works on government projects. james has a:

Digitalhealth electronics inc. is a company that builds diagnostic devices. it was the first company to develop a compact mri scanner by reconfiguring the components of the mri technology. this smaller and user-friendly version of the huge mri scanner created demand from small hospitals, nursing homes, and private practice doctors who were earlier dependent on the scanning machines in large hospitals. which of the following types of innovations does this scenario best illustrate? a. disruptive innovation b. incremental innovation c. radical innovation d. architectural innovation