Graphically, an increase in the number of vegetarians will cause the demand curve for Tofu (a meat substitute) to

Supply curves slope upward because:

a. the quality is assumed to vary with price. b. technology improves over time, increasing the ability of firms to produce more at each possible price. c. increases in the price of a good lead to rightward shifts of the supply curve. d. rising prides provide producers with the incentives needed to increase the quantity supplied.

What quantity of output and price do they try to set, when a group of oligopoly firms form a cartel? Will there be any changes in the price and quantity supplied if the cartel gets broken down?