**TI83F* AppVariable file 04/07/08, 14:40±  MC207 žnav F441BD13B950415AA7EB861D73925D5FMC207.MC2071  discount;discount:ÖThe amount by which a regular price is reduced.  percent equationmpercent equation:ÖAn equivalent form of the percent proportion in which the percent is written as a decimal.  percent proportionXpercent proportion:ÖCompares part of a quantity to the whole quantity using a percent.  percent of changeYpercent of change:ÖA ratio that compares the change in a quantity to the original amount. percent of decreasegpercent of decrease:ÖThe ratio of an amount of decrease to the original amount, expressed as a percent. percent of increasegpercent of increase:ÖThe ratio of an amount of increase to the original amount, expressed as a percent.  populationVpopulation:ÖA large group of data from which a sample of statistical data is selected.  principal6principal:ÖThe amount of money invested or borrowed.    random samplegrandom sample:ÖA sample that is chosen without any preference, representative of the entire population.   sales taxIsales tax:ÖAdditional amount of money charged on items that people buy.   simple interestosimple interest:ÖThe amount paid or earned for the use of money. The formula for simple interest is I = prt.   surveybsurvey:ÖA question or set of questions designed to collect data about a specific group of people.ÖÎè