4.5WritingaFunctionRule
WritingaFunctionRule
Example1
Carolynhas420CDsinhercollection.Eachmonth,sheadds12moreCDstohercollection.What
equationisafunctionrulethatrepresentsthissituation?
Example2
Anarcheryclubchargesanannualmembershipfeeof$65plus$2pervisit.Writeafunctionrule
forthetotalcostofbelongingtotheclubifyoumake!visitsinayear.Howmuchwoulditcostif
youusetheclubof15timesinayear?
Example3
Writeafunctionrulefortheareaofarectanglewhoselengthis3in.morethanthewidth.Whatis
theareaoftherectanglewhenitswidthis7in.?
4.5WritingaFunctionRule
Example4
Writeafunctionrulethatrepresentseachsituation.
a. Theprice"ofalargepizzais$7.95plus$0.75foreachtopping)onthepizza.
b. Jacquelyn’searnings*areafunctionofthenumberoflawns+shemowsatarateof$12
perlawn.
c. Thetotalfees.ofabookclubmembershipare$10permonth*andaone-time
administrativefeeof$4.75.
d. Ericis2yearsyoungerthan2timeshissister’sage.WritearulethatrepresentsEric’sage0
asfunctionofhissister’sage1.HowoldisEricishissisteris11?
Example5
Twelvecansofpeachesareplacedintoeachbox.Writeafunctionruleforthenumberofboxes
neededfor2cans.Howmanyboxesareneededfor1440cans?