At an equilibrium price for gasoline, a. everyone with the desire and the income to buy gasoline at that price can do so. b. surpluses are inevitable. c. inherent market forces will eventually change the quantities demanded and supplied. d. suppliers must be using the most efficient oil-drilling equipment available.

One principle of usability testing is that it permeates product development. what does that mean?

Brokers such as paypal benefit online businesses because they do not charge fees like credit cards. they deliver the money to the business immediately. they cannot store credit card numbers. the business does not have to get an account with credit-card companies.

Michael works in an it firm that is well known for making innovative products. michael is asked to develop a product that would serve an unmet need. though he has many ideas for it, none of them quite fits the bill. he finally decides to stand back from the problem for a period of time and ceases to consciously think about the yet-to-be-developed product. after a week, as he looks over his notes, he realizes the solution. the period of time in which michael did not consciously work on the problem is referred to as