微觀經濟學的練習試題以和答案解析英文版

下載可編輯下載可編輯.專業(yè).整理..專業(yè).整理.下載可編輯.專業(yè).整理.Chapter01ThinkingLikeanEconomistMultipleChoiceQuestions1.Economicsisbestdefinedasthestudyof:A.pricesandquantities.inflationandinterestrates.howpeoplemakechoicesundertheconditionsofscarcityandtheresultsofthosechoices.D.wagesandincomes.2.Economicquestionsalwaysdealwith:A.financialmatters.politicalmatters.insufficientresources.choiceinthefaceoflimitedresources.3.Therangeoftopicsorissuesthatfitwithinthedefinitionofeconomicsis:limitedtomarketactivities,e.g.,buyingsoap.limitedtoindividualsandfirms.extremelywide,requiringonlytheideasofchoiceandscarcity.verylimited.4.Thecentralconcernofeconomicsis:poverty.scarcity.wealthaccumulation.overconsumption.5.Thescarcityprincipleindicatesthat:nomatterhowmuchonehas,paredto100yearsago,individualshavelesstimetoday.withlimitedresources,havingmoreof"this"meanshavinglessof"that."becausetradeoffsmustbemade,resourcesarethereforescarce.

6.Thelogicalimplicationofthescarcityprincipleisthat:A.onewillneverbesatisfiedwithwhatonehas.aswealthincreases,makingchoicesbecomeslessnecessary.aswealthdecreases,makingchoicesbecomeslessnecessary.choicesmustbemade.7.Ifalltheworld'sresourcesweretomagicallyincreaseahundredfold,then:thescarcityprinciplewouldstillgovernbehavior.economicswouldnolongerberelevant.thescarcityprinciplewoulddisappear.tradeoffswouldbecomeunnecessary.8.Theprincipleofscarcityappliesto:A.thepoorexclusively.allconsumers.allfirms.everyone—consumers,firms,governments,andnations.9.Attheveryleast,JoeAverageandBillGatesarebothidenticallylimitedby:theirwealth.the24hoursthatcompriseaday.theirknowledge.theirinfluence.10.ForestisamountainmanlivingincompleteisolationinMontana.Heiscompletelyself-sufficientthroughhunting,fishing,andfarming.Hehasnotbeeninthecitytobuyanythinginfiveyears.Onecaninfer:thescarcityprincipledoesnotapplytoForest.Forestisnotrequiredtomakechoices.thescarcityprinciplestillappliesbecausemorehuntingmeanslessfishingandfarming.Forestisverysatisfied.

11.Thescarcityprincipleappliesto:A.alldecisions.onlymarketdecisions,e.g.,buyingacar.onlynon-marketdecisions,e.g.,watchingasunset.onlythepoor.12.Chrishasaone-hourbreakbetweenclasseseveryWednesday.Chriscaneitherstayatthelibraryandstudyorgotothegymandworkout.ThedecisionChrismustmakeis:notaneconomicproblembecauseneitheronecostsmoney.notaneconomicproblembecauseit'sanhourthatiswastednomatterwhatChrisdoes.aneconomicproblembecausethetuitionChrispayscoversboththegymandthelibrary.aneconomicproblembecauseChrishasonlyonehourduringwhichhecanstudyorworkout.13.Joshwantstogotothefootballgamethisweekend,buthehasapaperdueonMonday.Itwilltakehimthewholeweekendtowritethepaper.Joshdecidedtostayhomeandworkonthepaper.Accordingtothescarcityprinciple,thereasonJoshdidn'tgotothegameisthat:Joshprefersschoolworktofootballgames.writingthepaperiseasierthangoingtothegame.Joshdoesn'thaveenoughtimeforwritingthepaperandgoingtothegame.it'stooexpensivetogotothegame.14.WhetherstudyingthesizeoftheU.S.economyorthenumberofchildrenacouplewillchoosetohave,theunifyingconceptisthatwantsare:A.limited,resourcesarelimited,andthuschoicesmustbemade.B.unlimited,resourcesarelimited,andthuschoicesmustbemade.C.unlimited,resourcesarelimitedtosomebutnottoothers,andthussomepeoplemustmakechoices.D.unlimited,resourcesarelimited,andthusgovernmentneedstodomore.15.Thecost-benefitprincipleindicatesthatanactionshouldbetaken:ifthetotalbenefitsexceedthetotalcosts.iftheaveragebenefitsexceedtheaveragecosts.ifthenetbenefit(benefitminuscost)iszero.iftheextrabenefitisgreaterthanorequaltotheextracosts.16.Whenapersondecidestopursueanactivityaslongastheextrabenefitsareatleastequaltotheextracosts,thatpersonis:A.violatingthecost-benefitprinciple.followingthescarcityprinciple.followingthecost-benefitprinciple.pursuingtheactivitytoolong.17.Choosingtostudyforanexamuntiltheextrabenefit(improvedscore)equalstheextracost(mentalfatigue)is:A.notrational.anapplicationofthecost-benefitprinciple.anapplicationofthescarcityprinciple.therelevantopportunitycost.18.Thescarcityprincipletellsusthat__________,andthecost-benefitprincipletellsus__________.choicesmustbemade;howtomakethechoiceschoicesmustbemade;thatthecostscanneveroutweighthebenefitsofthechoicesraregoodsareexpensive;thatthecostsshouldoutweighthebenefitsofthechoicesraregoodsareexpensive;thatthecostscanneveroutweighthebenefitsofthechoices19.Accordingtothecost-benefitprinciple:thelowestcostactivityusuallygivesthelowestbenefit.apersonshouldalwayschoosetheactivitywiththelowestcost.C.apersonshouldalwayschoosetheactivitywiththegreatestbenefit.D.theextracostsandbenefitsofanactivityaremoreimportantconsiderationsthanthetotalcostsandbenefits.20.Arationalpersonisonewho:A.isreasonable.makeschoicesthatareeasilyunderstood.possesseswell-definedgoalsandseekstoachievethem.ishighlycynical.

21.TheseventhglassofsodathatTimconsumeswillproduceanextrabenefitof10centsandhasanextracostofzero(Timiseatingatthecafeteria).Thecost-benefitprinciplepredictsthatTimwill:A.realizehehashadtoomuchsodatodrinkandgohome.B.drinktheseventhglassandcontinueuntilthemarginalbenefitofdrinkinganotherglassofsodaiszero.C.volunteertoemptyoutthefountain.D.notdrinktheseventhglass.22.Janiemusteithermowthelawnorwashclothes,earningherabenefitof$30or$45,respectively.Shedislikesbothequallyandtheybothtakethesameamountoftime.Janiewillthereforechooseto_________becausetheeconomicsurplusis________.A.mowthelawn;greaterB.washclothes;greaterC.mowthelawn;smallerD.washclothes;smaller23.Deandecidedtoplaygolfratherthanpreparefortomorrow'sexamineconomics.Onecaninferthat:A.Deanhasmadeanirrationalchoice.Deanisdoingpoorlyinhiseconomicsclass.theeconomicsurplusfromplayinggolfexceededthesurplusfromstudying.thecostofstudyingwaslessthanthecostofgolfing.Larrywasacceptedatthreedifferentgraduateschools,andmustchooseone.EliteUcosts$50,000peryearanddidnotofferLarryanyfinancialaid.LarryvaluesattendingEliteUat$60,000peryear.StateCollegecosts$30,000peryear,andofferedLarryanannual$10,000scholarship.LarryvaluesattendingStateCollegeat$40,000peryear.NoNameUcosts$20,000peryear,andofferedLarryafull$20,000annualscholarship.LarryvaluesattendingNoNameat$15,000peryear.

24.TheopportunitycostofattendingEliteUis:A.$50,000B.$10,000C.$20,000D.$15,00025.TheopportunitycostofattendingStateCollegeis:A.$30,000B.$20,000C.$15,000D.$10,00026.Larrymaximizeshissurplusbyattending:EliteU,because$60,000isgreaterthanthebenefitattheotherschools.StateCollege,becausethedifferencebetweenthebenefitandcostisgreatestthere.NoNameU,becauseLarryhasafullscholarshipthere.EliteU,becausetheopportunitycostsofattendingEliteUarethelowest.27.LarryhasdecidedtogotoEliteU.Assumingthatallofthevaluesdescribedarecorrect,forLarrytodecideonEliteU,hemusthave:calculatedhissurplusfromeachchoiceandpickedtheonewiththehighestsurplus.underestimatedthebenefitsofattendingNoName.miscalculatedthesurplusofattendingEliteU.determinedtheopportunitycostofeachchoiceandpickedtheonewiththelowestopportunitycost.28.Jenspendsherafternoonatthebeach,paying$1torentabeachumbrellaand$11forfoodanddrinksratherthanspendinganequalamountofmoneytogotoamovie.Theopportunitycostofgoingtothebeachis:the$12shespentontheumbrella,foodanddrinks.only$1becauseshewouldhavespentthemoneyonfoodanddrinkswhetherornotshewenttothebeach.C.themovieshemissedseeing.D.themovieshemissedseeingplusthe$12shespentontheumbrella,foodanddrinks.29.Relativetoapersonwhoearnsminimumwage,apersonwhoearns$30perhourhas:aloweropportunitycostofworkinglongerhours.ahigheropportunitycostoftakingadayoff.aloweropportunitycostofdrivingfarthertowork.thesameopportunitycostofspendingtimeonleisureactivities.30.Theopportunitycostofanactivityisthevalueof:A.analternativeforgone.thenext-bestalternativeforgone.theleast-bestalternativeforgone.thedifferencebetweenthechosenactivityandthenext-bestalternativeforgone.31.Amyisthinkingaboutgoingtothemoviestonight.Aticketcosts$7andshewillhavetocancelherdog-sittingjobthatpays$30.Thecostofseeingthemovieis:A.$7.$30.$37.$37minusthebenefitofseeingthemovie.32.Economicsurplusis:thebenefitgainedbytakinganaction.thepricepaidtotakeanaction.thedifferencebetweenthebenefitgainedandthecostincurredoftakinganaction.thewagesomeonewouldhavetoearninordertotakeanaction.33.TheGovernorofyourstatehascutthebudgetfortheUniversityandincreasedspendingonMedicaid.Thisisanexampleof:thepitfallsofconsideringaveragecostsinsteadofmarginalcosts.poornormativeeconomicdecisionmaking.poorpositiveeconomicdecisionmaking.choiceinthefaceoflimitedresources.

34.Sallyearned$25,000peryearbeforeshebecameamother.Aftershebecameamother,shetoldheremployerthatheropportunitycostofworkingisnow$50,000,andsosheisnotwillingtoworkforanythingless.Herdecisionisbasedon:A.thehighcostofraisingachild.herdesiretosaveforherchild'scollegeexpenses.herincreasedvaluetoheremployer.thevaluesheplacesonspendingtimewithherchild.35.Alexreceivedafour-yearscholarshiptoStateU.thatcoveredtuitionandfees,roomandboard,andbooksandsupplies.Asaresult:attendingStateU.forfouryearsiscostlessforAlex.AlexhasnoincentivetoworkhardwhileatStateU.thecostofattendingStateU.istheamountofmoneyAlexcouldhaveearnedworkingforfouryears.thecostofattendingStateU.isthesumofthebenefitsAlexwouldhavehadattendingeachofthefourotherschoolstowhichAlexhadbeenadmitted.36.SupposeMaryiswillingtopayupto$15,000forausedFordpick-uptruck,butshefindsonefor$12,000.Her__________is__________.benefit;$12,000cost;$15,000economicsurplus;$3,000economicsurplus;$12,00037.Ingeneral,rationaldecisionmakingrequiresonetochoosetheactionsthatyieldthe:largesttotalbenefits.smallesttotalcosts.smallestnetbenefits.largesteconomicsurpluses.

38.Supposethemostyouwouldbewillingtopayforaplanetickethomeis$250,butyoubuyoneonlinefor$175.Theeconomicsurplusofbuyingtheonlineticketis:A.$175.$250.$75.$0.39.Theuseofeconomicmodels,likethecost-benefitprinciple,meanseconomistsbelievethat:thisisexactlyhowpeoplechoosebetweenalternatives.thisisareasonableabstractionofhowpeoplechoosebetweenalternatives.thosewhoexplicitlymakedecisionsthiswayaresmarter.withenougheducation,allpeoplewillstarttoexplicitlymakedecisionsthisway.40.Jennadecidestoseeamoviethatcosts$7fortheticketandhasanopportunitycostof$20.Afterthemovie,shesaystooneofherfriendsthatthemoviewasnotworthit.Apparently:Jennafailedtoapplythecost-benefitmodeltoherdecision.Jennawasnotrational.Jennaoverestimatedthebenefitsofthemovie.Jennaunderestimatedthebenefitsofthemovie.41.Mostofusmakesensibledecisionsmostofthetime,because:A.weknowthecost-benefitprinciple.subconsciouslyweareweighingcostsandbenefits.mostpeopleknowaboutthescarcityprinciple.weconducthypotheticalmentalauctionswhenwemakedecisions.42.Supposeapersonmakesachoicethatseemsinconsistentwiththecost-benefitprinciple.Whichofthefollowingstatementsrepresentsthemostreasonableconclusiontodraw?A.Theperson(explicitlyorimplicitly)over-estimatedthebenefitsorunder-estimatedthecostsorboth.B.Thecost-benefitprincipleisrarelytrue.Thepersondoesnotgrasphowdecisionsshouldbemade.Thepersonissimplyirrational.

43.Economicmodelsareintendedto:A.applytoallexamplesequallywell.eliminatedifferencesinthewaypeoplebehave.generalizeaboutpatternsindecision-making.distinguisheconomicsstudentsfromeveryoneelse.44.Economicmodelsclaimtobe:reasonableabstractionsofhowpeoplemakechoices,highlightingthemostimportantfactors.exactreplicationsofthedecision-makingprocesspeopleuse.C.interestingchalkboardexerciseswithlittleapplicabilitytotherealworld.D.exceptionallyaccuratemethodsofpredictingnearlyallbehaviorofeveryone.45.Thecost-benefitmodelusedbyeconomistsis:unrealisticbecauseitistoodetailedandspecifictoapplytoavarietyofsituations.unrealisticbecauseeveryonecanthinkoftimeswhenheorsheviolatedtheprinciple.usefulbecauseeveryonefollowsitallofthetime.usefulbecausemostpeoplefollowitmostofthetime.46.Barryownsaclothingstoreinthemallandhasaskedtwoeconomicconsultantstodevelopmodelsofconsumerbehaviorthathecanusetoincreasesales.Barryshouldchoosethemodelthat:A.doesnotincludesimplifyingassumptions.isthemostdetailedandcomplex.assumesthatconsumersapplythecost-benefitprinciple.predictsthatconsumerswillalwayspreferBarry'sstoretothecompetingstores.47.Economistsuseabstractmodelsbecause:everyeconomicsituationisunique,soitisimpossibletomakegeneralizations.everyeconomicsituationisessentiallythesame,putershaveallowedeconomiststodevelopabstractmodels.48.Mostpeoplemakesomedecisionsbasedonintuitionratherthancalculation.Thisis:irrational,becauseintuitionisoftenwrong.consistentwiththeeconomicmodelofdecision-making,becausecalculatingcostsandbenefitsleadstodecision-makingpitfalls.C.consistentwiththeeconomicmodelbecausepeopleintuitivelycomparetherelativecostsandbenefitsofthechoicestheyface.D.inconsistentwiththeeconomicmodel,butrationalbecauseintuitiontakesintoaccountnon-financialconsiderations.49.Moehasabigexamtomorrow.Heconsideredstudyingthisevening,butdecidedtogooutwithCurlyinstead.SinceMoealwayschoosesrationally,itmustbetruethat:theopportunitycostofstudyingtonightislessthanthevalueMoegetsfromspendingtimewithCurly.theopportunitycostofstudyingtonightisequaltothevalueMoegetsfromspendingtimewithCurlyminusthecostofearningalowgradeontheexam.MoegetsmorebenefitfromspendingtimewithCurlythanfromstudying.MoegetslessbenefitfromspendingtimewithCurlythanfromstudying.50.Ifonefailstoaccountforimplicitcostsindecisionmaking,thenapplyingthecost-benefitrulewillbeflawedbecause:A.thebenefitswillbeoverstated.thecostswillbeunderstated.thebenefitswillbeunderstated.thecostswillbeoverstated.YourclassmatesfromtheUniversityofChicagoareplanningtogotoMiamiforspringbreak,andyouareundecidedaboutwhetheryoushouldgowiththem.Theround-tripairfaresare$600,butyouhaveafrequent-flyercouponworth$500thatyoucouldusetopaypartoftheairfare.Allothercostsforthevacationareexactly$900.Themostyouwouldbewillingtopayforthetripis$1400.Youronlyalternativeuseforyourfrequent-flyercouponisforyourtriptoAtlantatwoweeksafterthebreaktoattendyoursister'sgraduation,whichyourparentsareforcingyoutoattend.TheChicago-Atlantaround-tripairfaresare$450.

51.Ifyoudonotusethefrequent-flyercoupontofly,shouldyougotoMiami?Yes,yourbenefitismorethanyourcost.No,yourbenefitislessthanyourcost.Yes,yourbenefitisequaltoyourcost.No,becausetherearenobenefitsinthetrip.52.WhatistheopportunitycostofusingthecouponfortheMiamitrip?A.$100B.$450C.$500D.$55053.Ifyouusethefrequent-flyercoupontoflytoAtlanta,wouldyougetanyeconomicsurplusbymakingthetrip?A.No,thereisalossof$50.B.Yes,surplusof$350.C.Yes,surplusof$400.D.Yes,surplusof$100.54.IftheChicago-Atlantaround-tripairfareis$350,shouldyougotoMiami?No,thereisalossof$50.No,thereisalossof$100.Yes,thereiseconomicsurplusof$50.Yes,thereiseconomicsurplusof$400.55.Patearns$25,000peryear(aftertaxes),andPat'sspouse,Chris,earns$35,000(aftertaxes).Theyhavetwopre-schoolchildren.Childcarefortheirchildrencosts$12,000peryear.Pathasdecidedtostayhomeandtakecareofthechildren.Patmust:A.valuespendingtimewiththechildrenbymorethan$25,000.B.valuespendingtimewiththechildrenbymorethan$12,000.valuespendingtimewiththechildrenbymorethan$13,000.valuespendingtimewiththechildrenasmuchasdoesChris.

Youpaid$35foraticket(whichisnon-refundable)toseeSPAM,alocalrockband,inconcertonSaturday.(Assumethatyouwouldnothavebeenwillingtopayanymorethan$35forthisconcert.)YourbosscalledandsheislookingforsomeonetocoverashiftonSaturdayatthesametimeastheconcert.Youwillhavetowork4hoursandshewillpayyoutimeandahalf,whichis$9/hr.56.ShouldyougototheconcertinsteadofworkingSaturday?A.Yes,yourbenefitismorethanyourcost.No,yourbenefitislessthanyourcost.Yes,yourbenefitisequaltoyourcost.No,becausetherearenobenefitsintheconcert.57.Whatistheopportunitycostofgoingtotheconcert?$1$9$35$3658.Whatisyouropportunitycost,ifyougotoworkonSaturday?$0$9$35$3659.YoureconomicsurplusofgoingtoworkonSaturdayis:$0$1$35$36

Matthasdecidedtopurchasehistextbooksforthesemester.HisoptionsaretopurchasethebooksviatheInternetwithnextdaydeliverytohishomeatacostof$175,ortodrivetocampustomorrowtobuythebooksattheuniversitybookstoreatacostof$170.Lastweekhedrovetocampustobuyaconcertticketbecausetheyoffered25percentofftheregularpriceof$16.因為他們提供75折的正常價格16美元。60.ThebenefittoMattofbuyinghisbooksatthebookstoreis_____.$5$9$170$17561.ThebenefittoMattwas____fromdrivingtocampustobuytheconcertticketlastweek.A.$2B.$4$9$1662.Accordingtothecost-benefitprinciple:itwouldnotberationalforMatttodrivetocampustopurchasethebooksbecausethe$5savingisonlytwopercentofthecostofthebooks,andthatismuchlessthanthe25percenthesavedontheconcertticket.itwouldberationalforMatttodrivetocampustopurchasethebooksbecauseitcostslesstobuythebookstherethanviatheInternet.itwouldberationalforMatttodrivetocampustopurchasethebooksbecausethe$5savingismorethanhesavedbydrivingtheretobuytheconcertticket.itwouldnotberationalforMatttodrivetocampustopurchasethebooksbecausethecostofgasandhistimemustcertainlybemorethanthe$5hewouldsave.

63.AssumetheminimumthatMattwouldbewillingtoaccepttodrivetotheuniversitycampusisequaltotheamounthesavedontheconcertticket.WhatwouldbetheamountofhiseconomicsurplusifheboughthistextbooksattheuniversitybookstoreratherthanviatheInternet?$5$1$50$2064.Themarginalbenefitofanactivityisthe:A.sameasthetotalbenefitsoftheactivity.totalbenefitdividedbytheleveloftheactivity.extrabenefitassociatedwithanextraunitoftheactivity.totalbenefitassociatedwithanextraunitoftheactivity.65.Ifthemarginalcostsof1,2,and3hoursoftalkingonthephoneare$50,$75,and$105respectively,thenthetotalcostsareof1,2and3hoursoftalkingonthephoneare:A.$50,$150,and$315respectively.$50,$41.67,and$115respectively.$50,$125,and$230respectively.$50,$175,and$405respectively.66.Ifthetotalbenefitsofwatching1,2,and3baseballgamesonTVare100,120,and125respectively,thenthemarginalbenefitsofwatching1,2and3baseballgamesonTVare:A.100,120,and125respectively.100,20,and5respectively.100,609,and41.67respectively.100,240,and375respectively.67.Theextrabenefitthatcomesfromanextraunitofactivityiscalledthe_________oftheactivity.marginalbenefitmarginalcostaveragebenefitreservationbenefit

68.Themarginalcostofanactivityisthe:changeinthecostoftheactivitythatresultsfromanextraunitoftheactivity.sameasthetotalcostoftheactivity.ratiooftotalcosttotheleveloftheactivity.changeintheleveloftheactivitydividedbythechangeinthecostoftheactivity.69.Theextracostthatresultsfromanextraunitofanactivityisthe:marginalbenefit.marginalcost.reservationcost.sameastheopportunitycost.70.Dividingthetotalcostofnunitsofanactivitybynrevealsthe:averagebenefit.marginalcost.unitspercost.averagecost.71.Youhadtopay$600(non-refundable)foryourmealplanfortheFallsemester,whichgivesyouupto150meals.Ifyoueatallofthemeals,youraveragecostforamealequals:A.$6.B.$5.$4.$0.25.72.Youhadtopay$600(non-refundable)foryourmealplanforFallsemesterwhichgivesyouupto150meals.Ifyoueatonly100meals,youraveragecostforamealequals:A.$6.B.$5.$4.$0.25.73.Youhadtopay$600(non-refundable)foryourmealplanforFallsemester,whichgivesyouupto150meals.Ifyoueatonly100meals,yourmarginalcostforthe100thmealis:$6$4$0.25$074.Theaveragebenefitofanactivityisthe:totalbenefitoftheactivitydividedbythenumberofunits.numberofunitsdividedbythetotalbenefitoftheactivity.numberofunitstimesthetotalbenefitoftheactivity.extrabenefitforoneadditionalunitoftheactivity.75.Yousave$10ongaseveryweeksinceyouliveclosetothebusstop.Youhaveclassfivedaysaweek.Whatisyouraveragebenefitperdayforlivingclosetothebusstop?$10$5$2$1.4376.Yourscholarshipdependsonyourmaintaininga3.5cumulativeGPA.YourGPAforlastsemesterwas3.6,whichbroughtyourcumulativeGPAdown.Whatmustbetrue?Yourmarginalgrades(lastsemester'sgrades)werehigherthanyouroverallGPA.Yourmarginalgrades(lastsemester'sgrades)werelowerthanyouroverallGPA.Ifthissemester'sgradesarethesameaslastsemester's,youroverallGPAwillstaythesame.Ifthissemester'sgradesarethesameaslastsemester's,youmightloseyourscholarship.

77.Refertothetableabove.Theaveragecostof4unitsofthisactivityis:A.$20B.$25C.$30D.$4078.Refertothetableabove.Themarginalcostofthe3rdunitofthisactivityis:A.$30B.$25C.$20D.$1079.Refertothetableabove.Theaveragebenefitof3unitsofactivityis:A.$80B.$60C.$40D.$2080.Refertothetableabove.Themarginalbenefitofthe5thunitofactivityis:$60$50$5$0

81.Refertothetableabove.Accordingtothecost-benefitprinciple,thelevelofactivitythatprovidesthelargestnetbenefitis:A.1B.3C.4D.682.Refertothetableabove.Theaveragecostof5unitsofactivityis:A.$1B.$2C.$3D.$483.Refertothetableabove.Themarginalcostofthe4thunitofactivityis:A.$1B.$2C.$3D.$484.Refertothetableabove.Theaveragebenefitof4unitsofactivityis:A.$4B.$5$6$10

85.Refertothetableabove.Themarginalbenefitofthe6thunitofactivityis:A.$1B.$2$4$1086.Refertothetableabove.Accordingtothecost-benefitprinciple,thelevelofactivitythatprovidesthelargestnetbenefitis:A.1B.4C.5D.787.Refertothetableabove.Thetotalvalueofdonationsraisedbythreeemployeesis:三名雇員的善款的總價值是：A.$43,899.B.$45,000.C.$48,911.D.$51,963.88.Refertothetableabove.Thetotallaborcostof4employeesis:A.$21,500.B.$22,000.C.$38,000.D.$43,121.

89.Refertothetableabove.ThePresidentofWhat'sAMatterUdecidestohirefundraisersaslongastheaveragebenefitexceedstheaveragecost,resultingin__________employeesbeinghiredandanetbenefit(totaldonationsminustotallaborcosts)of__________.A.5;$17,080B.5;$67,080C.4;$60,000D.4;$22,00090.Refertothetableabove.Themarginalbenefit(extradonations)ofthe2ndemployeeis:A.$42,426.B.$21,213.C.$12,426.D.$11,337.91.Refertothetableabove.Themarginallaborcost(extralaborcost)ofthe4themployeeis:A.$9,500.B.$10,750.C.$11,000.D.$13,000.92.Refertothetableabove.TheChairmanoftheEconomicsDepartmentatWhat'sAMatterUsaysthatfundraisersshouldbehiredaslongastheirmarginaldonationsexceedtheirmarginallaborcosts.Followingthiscriterion,__________employeesarehiredandnetbenefitsare__________.ReferTo:01-92A.1;$22,000B.2;$25,4263;$25,4262;$3,476

93.Refertothetableabove.Thenetbenefitofhiringfundraisersislargestwhen__________employeesarehired.ReferTo:01-93A.4B.3C.2D.194.Gingerboughtaphonethatcamewitha$10rebate.Gingershouldfilloutandmailintherebateformif:theopportunitycostofthetimeandtroubleofsendingintherebateformislessthan$10.theopportunitycostofthetimeandtroubleofsendingintherebateformismorethan$10.shewouldhaveboughtthephonewithouttherebate,andsosendingintherebateforminvolvesnoopportunitycost.Ginger'ssurplusfrompurchasingthephone