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Firms use marginal analysis to determine prices by a) changing prices in accordance with information from retailers. b) using comparisons with strong competitors to position prices accordingly. c) examining the effect on revenue of small changes to the price of one item. d) trying to minimize production costs by using better and more efficient methods.

In a government based on the consent of the governed, who has the ultimate authority?

Gneiss is formed. the mineral grains in which granite are flattened under pressure