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Thetwographsshowstheresourcesofenergyinthe1980sandthe1990sinUSA.Thegraphwhichrepresentthemainsourcesofenergyin1980S.FromthegraphIcanclearlyseethatthemainresourcesareoilandthenaturalgashave26%whilecoalhave22%.MoreoverhydroelectricpowerandnuclearpowerhavethesameproportionThegraphwhichshowthesourcesuseinUSAin1990shaveshownadecreaseuseinoilandnaturalgasfrom1980(33%and25%),however,bothcoalandnuclearpowerincreasedfrom1980to27%and10%whiletheusageofhydroelectricremainedthesameproportion。Byreviewingtheinformationofthesetwographs,IcanseethatinUSAtheuseofcoalandnuclearpowerincreasewhileoil,naturalgasandhydroelectricpowerdecrease.Thedramaticchangeabouttheuseoftheresourcesmaycausedbytheprotectionoftheenvironmentandthecostofthosesources.ThesalesatthissmallrestaurantduringtheweekofOctober7to13thfollowedafairlysetpatternfromMondaytoFriday,andthenshowednotableshiftontheweekend.ThelunchanddinnersalesduringtheweekpeakedonFridayandthendipperdownastheweekendsetin.DuringtheweekofOctober7-14th,thelunchsalesaveragedatapproximately$2,400.ThehighestlunchsalesoccurredonFriday,andthelowestoccurredonSunday.Sunday'slunchsaleswereapproximately$1,000lessthantheaveragelunchsalesduringtherestoftheweek.Dinnersales,whichgeneratedatleast$1,000to$1,500moreadaythanlunchsales,alsoremainedsteadyduringtheweek.Justlikethelunchsales,thedinnersalespeakonFridayanddippeddownfortheweekend.ExcludingWednesdayandThursday,thelunchanddinnersalesfromOctober7-11rosegraduallyuntiltheendofthebusinessweek.Midweek,onWednesdayandThursday,thesaleswereslightlylowerthantheywereonTuesday.Accordingtothesalesreport,thisrestauranthasasteadylunchanddinnercrowd.ThemostprofitabledayduringthesecondweekofOctoberwasFriday.Sunday,wastheleastprofitableday,withthefullday'ssalestotalinglessthantheFridaydinnersales.Thesenumbersarereflectiveofarestaurantthatislocatedinabusiness/financialdistrictwherebusinesshoursareMondaythroughFriday.Gainingworkexperiencepriortograduationhelpsuniversitystudentstosucceedingettingtheirfirstjob.Forthisreas
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