Which type of online community selectively allows access to only some people and may offer a high degree of social capital to the lucky few who pass the test?

A) Scale free.
B) Open access.
C) Gated.
D) Democratic.
E) Coercive.

The total revenue received by sellers of a good is computed by

A) multiplying the price times the quantity sold.
B) adding the price and the quantity sold.
C) multiplying the percentage change in price times the percentage change in quantity.
D) dividing the percentage change in quantity by the percentage change in price.

According to one widely cited report, the mere presence of mobile technologies has the potential to ________ interpersonal connections. (weaken/strengthen)

A production function shows the least amount that a firm will produce given the amount of labor input.