A saver can eliminate ________ risk through ________.

The above table shows the market shares for all the landscaping services in a suburban area. The four-firm concentration ratio equals

A) 30 percent. B) 60 percent. C) 65 percent. D) 100 percent.

Which of the following is most likely to be a monopolistically competitive firm?

A) smartphone manufacturer B) cellphone service provider C) college textbook publisher D) computer software maker