In this case all of the cracks and crevices are sealed. Then a hole is put in the slab to install the small fan and create sub-slab suction. The average Radon mitigation cost in Portland, Oregon, or Vancouver, Washington is between $800 to $2,500 with an average of $1,200.
The three conditions for monopolistic competition are (1) a large number of. producers, (2) differentiated products, and (3) free entry and exit. a. There are many bands that play at weddings, parties, and so on. There are no sig-. nificant barriers to entry or exit.
The long-run equilibrium of monopolistic competition is like that of perfect competition in that entry, when the industry makes short-run economic profits, and exit, when it makes short-run economic losses, drives economic profits to zero in the long run. 4.