Pitchers in professional baseball use a sticky substance o…

  Pitchers in professional baseball use a sticky substance on the baseball to increase the rotational speed of their pitches. One company is the sole supplier of the substance, because only this company knows where ingredients for the substance can be obtained. Which barrier to entry exists in the baseball sticky substance market?  

  Catherine’s Pet Shop operates in a monopolistically compet…

  Catherine’s Pet Shop operates in a monopolistically competitive industry. Catherine’s Pet Shop just introduced parrots as a new pet offering and Catherine is trying to set the price per pair. Which of the following should Catherine consider when pricing the parrots for her profit-maximizing monopolistically competitive firm?