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Arianna Zamorano-Module 5

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arizam's version from 2016-04-18 00:58

Section

Question Answer
What is the principal?the intial amount of money borrowed or saved
What is the percent increase?a percent change describing an increase in a quantity
What is percent decrease?a percent change describing a decrease in a quantity
What is simple interest?a fixed percent
Percent Increase and Decrease formulapercent change=amount of change/original amount
Percent increase and Decrease steps1)find the amount of change,2)find the percent increase
Markups steps1)use a bar model,2)retail price=original cost+markup,3)use the expression to find the retail price
tax price steps1)use a a bar model ,2)add price and sales tax
memorize