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Vocab chk 4 PACE

4th vocabulary check 2013 14

inverse operation are opposite mathematical computations, such as addition and subtraction
nth term refers to the position of any number in a sequence
variable a symbol, usually a letter, used to represent a number
commission money earned for the sale of an item, usually a percentage of the sale price
discount the amount of money saved on a purchase, which is subtracted from the original price
percent of change compares a change in quantity to the original amount
proportion an equation that shows that two ratios are equivalent
rate a ratio that compares two numbers with different kinds of units (for example, price:item, miles per gallon, meters/second)
sale price the cost of an item after a discount is taken
tax percent of the original, or purchase price that is added to that price (which is paid to the government
tip an additional percentage added to the cost of an item (meal, or haircut, etc.) given to the person providing the service.
unit rate a rate with a denominator of one
Created by: laura.bearden