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1、满分网、”夕manfeii.netl.y=2x1+7x-3Thefigureaboveshowsthegraphofafunction/*definedbyy(x)=
2、2x
3、+4x—2xL32x-22xl33x-2forallnumbersx.Forwhichofthefollowingfunctionsgdefinedforallnumbersxdoesthegraphofgintersectthegraphof/?Ag(x)iBg(x)~]Cg⑴iDg(劝EgWn3.EachemployeeofacertaincompanyisineitherDepartmentXo
4、rDepartmentY,andtherearemorethantwiceasmanyemployeesinDepartmentXasinDepartmentY.Theaverage(arithmeticmean)salaryis$25,000fortheemployeesinDepartmentXandis$35,000fortheemployeesinDepartmentY.Whichofthefollowingamountscouldbetheaveragesalaryforalloftheemployeesinthecompany?Indicateallsucha
5、mounts.A$26,000B$28,000C$29,000D$30,000E$31,000F$32,000G$34,0003.Workingaloneatitsconstantrate,machineAproduceskcarpartsin10满分网步manfeii.netminutes.Workingaloneatitsconstantrate,machineBproduceskcarpartsin15minutes.HowmanyminutesdoesittakemachinesAandB,workingsimultaneouslyattheirrespectiv
6、econstantrates,toproducekcarparts?minutesANNUALPERCENTCHANGEINDOLLARAMOUNTOFStorePercentChangefrom2006to2007PercentChangefrom2007to2008P+10-10Q-204-9R+5+12s-7一15T+17-8SALESATFIVERETAILSTORESFROM2006TO20083.1)IfthedollaramountofsalesatStorePwas$800,000for2006,whatwasthedollaramountofsalesa
7、tthatstorefor2008?A$727,200B$792,000C$800,000D$880,000E$968,0002)AtStoreT,thedollaramountofsalesfor2007waswhatpercentofthedollaramountofsalesfor2008?Giveyouranswertothenearest0.1percent.%3)Whichofthefollowingstatementsmustbetrue?Indicateallsuchstatements.AFor2008thedollaramountofsalesatSt
8、oreRwasgreaterthanthatateachoftheotherfourstores.BThedollaramountofsalesatStoreSfor2008was22percentlessthanthatfor2006.CThedollaramountofsalesatStoreRfor2008wasmorethan17percentgreaterthanthatfor2006・4.Acertainstoresellstwotypesofpens:onetypefor$2perpenandtheothertypefor$3perpen.Ifacustom
9、ercanspendupto$25tobuypensatthestoreandthereisnosalestax,whatisthegreatestnumberofpensthecustomercanbuy?A9B10C11D12E203.Alistofnumbershasameanof8andastandarddeviationof2.5.Ifxisanumberinthelistthatis2standarddeviationsabovethemean,whatisthe满分网■夕夕manfeti.netvalueofx?
