Scenario b. tom, a student, studied the different models of the e-commerce market and gathered some information on a few companies using internet commerce. hotchilly. com charges its customers a fee for its goods and services. pinkslip. com asks its clients to pay a fee to use the site for promotions of their products and to gain demographics. chrometech inc. pays autechnic. com a commission to launch promotions on websites associated with it. corpdaily. com, a newspaper website, provides access to its services charging a monthly fee from its customers.
from scenario b, it can be inferred that hotchilly. com uses the model.
a. subscription
b. advertising support
c. transaction fee
d. affiliate
e. intermediary

Feedback systems do not always involve negative feedback. economic inflation, which is evidenced by continually rising prices, is a positive feedback system. a positive feedback control system, as shown on the right, adds the feedback signal to the input signal, and the resulting signal is used as the input to the process. a simple model of the price-wage inflationary spiral is shown on the right. add additional feedback loops, such as legislative control or control of the tax rate, to stabilize the system. it is assumed that an increase in workers’ salaries, after some time delay, results an increase in prices. under what conditions could prices be stabilized by falsifying or delaying the availability of cost-ofliving data? how would a national wage and price economic guideline program affect the feedback system?