- A rectangularswimmingpool has lengththat is yardsgreaterthan its width.
a. Give the area enclosedby the pool as a functionof its width.
b. Find the dimensionsof the pool if it enclosesan area of squareyards.
- Supposeyou purchaseda car in 2004for You havejust foundout that the currentyear 2008
valueof your car is Assumingthat the rate of depreciationof the car is constant,find a formula
that showschangingvalueof the car from 2004to 2008. - For problem#8, in whatyear will the valueof the vehiclebe less than?
- For problem#8, explainwhy usinga constantrate of changefor depreciationmay not be the best way
to modeldepreciation.
Answers - and are two solutions.The interceptsare locatedat and We havea
linearrelationshipbetween and so its graphcan be sketchedas the line passingthroughany two
solutions. - by solvingfor we have so two solutionsare and The -intercepts
are locatedat and the -interceptis locatedat The graphis symmetricin the
-axis.
- Usingyour graphingcalculator, enterthe relationshipon theY=menu.Viewinga tableof points,we see
manysolutions,say and and the interceptsat and By inspection
we see that the graphis symmetricaboutthe origin. - Usingyour graphingcalculator, enterthe relationshipon theY=menu.Viewinga tableof points,we see
manysolutions,say and and the interceptslocatedat and By in-
spectionwe see that the graphdoesnot haveany symmetry.