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# PACE unit 3

equation a mathematical sentence using numbers and/or variables where both sides are equal
expression a combination of numbers, operations and/or variables with no equal signs
arithmetic sequence a series of numbers that has a common difference
coefficient the number in front of the variable which indicates multiplication in an expression or equation
constant a term in an expression or equation that does not contain a variable
inverse operations are opposite mathematical computations such as subtraction and addition
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 the change in quantity to the original amount
proportion an equation that shows that two ratios are equivalent
sale price the cost of an item after a discount has been subtracted
sales tax a percent of the purchase price that is added onto the original price which is paid to the government
tip an additional percentage added to the cost of an item such as a haircut or meal that is given to the person providing the service
unit rate a rate with a denominator of one
scale factor a number that is multiplied with another number to create an equivalent ratio
percent proportion the ratio that is used to use percent problems
Created by: cwagar