Homework4.2
1.Thespeedlimitis75milesperhour.Ifatruck
travelingatthespeedlimitdrives225milesbefore
stopping,findthelengthoftimeatruckhas
traveled.
Letx=
2.Katiedriveshercarat55milesperhourfor3
hours.Howfardoesshetravel?
Letx=
3.Alexearned$326thissummermowinglawns.The
totalwas$40morethanwhatheearnedlastyear.
Howmuchdidheearnlastyear?
4.TigerWoodswonthe2002MastersChampionship
withafinalscoreof12underpar,or–12.Hisscores
forthefirstthreeroundswere–2,–3,and–6.What
washisscoreforthefourthround?
5.Graceearns$5perhourwhenshebabyͲsits.How
manyhoursdoessheneedtoworktoearn$75?
6.Abatchofcookiessplitamongfourstudents
ଵ
resultedin3 cookiesperstudent.Howbigwasthe
ଶ
batch?
7.Felipeearns$9perhourforhelpinghis
grandmotherwithheryardwork.Howmanyhours
musthehelphisgrandmotherinordertoearn$54?
8.TheatomicnumberofMercuryisthesumofthe
atomicnumberofAluminumand67.Theatomic
numberofMercuryis80.Writeandsolvean
additionequationtofindtheatomicnumberof
Aluminum.
Solvetheequations.Showeverystep.
9.
10. 11.