Answer:
<em>The law of demand states that as the price of a good decreases, the quantity demanded of that good increases. In other words, the law of demand states that the demand curve, as a function of price and quantity, is always downward sloping.</em>
Explanation:
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There´ s no correct percentage for 2013 yet but in 2012 it came up to 100 works at one percentage
1991. Although its fall lapsed somewhat into 1992, as well.