marginal utility, pricing policy, demander's behavior

1. simple dispensing machines offer opportunites for consumers to take numerous copies for the price of 1 copy. why do consumers usually take only one copy?

2. the price of a seasonal pass to six flags great adventure is not much more than a weekly pass. why is this a reasonable pricing policy?

3. Tim eats only burgers and tacos. in equilibrium, his marginal utility of burgers is 20 and his marginal utility of tacos is 10. The price of burgers is $4. what is the price of a taco?
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