| http://www.w3.org/ns/prov#value | - This fact: implies that, for most people, the marginal benefit of reading a second newspaper is less than the marginal cost. ??? ??? ??? In deciding whether to study for an economics quiz or go to a movie, one is confronted by the idea(s) of: scarcity and opportunity costs. ??? ??? ??? Potatoes cost Janice $1 per pound, and she has $5.00 that she could possibly spend on potatoes or other items.
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