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# Algebra Chapter 2

ratio a comparison of two quantities by division
rate a ratio of two quantities with different units
proportion a statement that two ratios are equivalent
sales tax a percent of an item's cost collected by state government
similar figures have exactly the same shape but not necessarily the same size
scale drawing uses a scale to represent an object as smaller or larger than the actual object
markup an amount by which a wholesale cost is increased
commission money paid to a person for making a sale
interest money charged for borrowing money, or money earned when saving or investing money
principal the amount of money invested or borrowed
tip an amount of money added to a bill for service
indirect measurement using proportions involving similar triangles to find a length that is not easily measured.
percent change an increase or decrease given as a percent of the original amount
discount an amount by which an original price is reduced
unit rate a rate in which the second quantity in the comparison is one unit.
Created by: galbreath01