Tubaugh corporation has two major business segments--east and west. in december, the east business segment had sales revenues of $330,000, variable expenses of $180,000, and traceable fixed expenses of $40,000. during the same month, the west business segment had sales revenues of $1,000,000, variable expenses of $516,000, and traceable fixed expenses of $191,000. the common fixed expenses totaled $290,000 and were allocated as follows: $145,000 to the east business segment and $145,000 to the west business segment. the contribution margin of the west business segment is:

Martha is one producer in the perfectly competitive jelly industry. last year, martha and all of her competitors found themselves earning economic profits. if there is free entry and exit, what do you expect to happen to the number of suppliers in the industry and the price of jelly? the number of suppliers will increase, and the price of jelly will fall. the number of suppliers will decrease, and the price of jelly will increase. the number of suppliers will increase, and the price of jelly will increase. the number of suppliers will decrease, and the price of jelly will fall.