Test bank for graphical approach to precalculus with limits 7th edition hornsby

DOWNLOAD THE Test Bank for Graphical Approach to Precalculus withLimit
n n n n n n n n n n

s 7th Edition Hornsby n n n


Name:nn
Chapter 2 Test Form An n n n Date:nn


l. MatchnthensetndescribedninnColumnnInwithnthencorrectnintervalnnotationnfromnColumnnII.nChoicesninnColumnnIIn
maynbenusednonce,nmorenthannonce,nornnotnatnall.
ColumnnI ColumnnII

(a) domainnof fn nx nnnxnn3
2
A.n 3,nn

(b) rangenof fn nx nnnxnn3
2
B.n 0,nn

(c) domainn ofn xn n y2n n3 C.n 3,nn

(d) rangenofn xn n y2n n3 D.n  ,0 

(e) domainnof fn nxnn3n x E.n 3,nn

(f) rangenof fn nxn 3nnx F.n ,3

(g) domainnof fn nxn 3n xnn3 G.n ,n

(h) rangenof fn nxn 3n xnn3 H.n  ,0 

(i) domainnof fn nxnnn xnn3

(j) rangenof fn nxnnn xn n3

2. Thengraphnof yn n fn nxn isn shownn here.




Sketchnthengraphnofneachnofnthenfollowing.nUsenorderednpairsntonindicaten3npointsnonnthengraph.
(a) yn n fn nxnn3 (b) yn n fn nxnnn3 (c) yn n fn nx

(d) yn n nfn nx (e) yn n3nfn nxn (f) yn n fn nx



3. Ifnthenpointn 9,n 12n liesnonnthengraphnof ynn fn(x),n determinenanpointnonnthengraphnofneachnequation.
(a) n1n   (b) fn 3xn
 fn n x
n
9n





  

4. Graph yn nnfn nxnn bynhand.
1
fn(x)nnnxnn2  1 (b) fn(x)nn xnn3
2nn
(a)
2


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,DOWNLOAD THE Test Bank for Graphical Approach to Precalculus withLimit
n n n n n n n n n n

s 7th Edition Hornsby
n n n




5. Observenthencoordinatesndisplayednatnthenbottomnofnthengivennscreennshowingnanportionnofnthengraph
yn n fn nx. Answerneachnofnthenfollowingnbasednonnyournobservation.




(a) Ifnthengraphnisnsymmetricnwithnrespectntontheny-
axis,nwhatnarenthencoordinatesnofnanothernpointnonnthengraph?
(b) Ifnthengraphnisnsymmetricnwithnrespectntonthenorigin,nwhatnarenthencoordinatesnofnanothernpointnonnthen
graph?
(c) Supposenthengraphnisnsymmetricnwithnrespectntontheny-
axis.nSketchnantypicalnviewingnwindownwithndimensionsn 5,n 5n byn 0,n 10.n Thenndrawnthengraph
nyounwouldnexpectntonseeninnthisnwindow.




6. (a)n Writenandescriptionnthatnexplainsnhownthengraphnof ynn2 xn 1  3ncannbenobtainednbyntranslatingnthe
graphnofn yn nnn x.

(b)n Sketchnbynhandnthengraphnof yn n2n xnn2n n3. Statenthendomainnandnthenrange.

7. Considernthengraphnofnthenfunctionnshownnhere.




Statentheninterval(s)novernwhichnthenfunctionnis:
(a) increasing (b)n decreasing (c)n constant (d)n continuous
(e)n Whatnisnthendomainnofnthenfunction? (f)n Whatnisnthenrangenofnthisnfunction?

8. Solveneachnofnthenfollowingnanalytically,nshowingnallnsteps.nNextngraph y1n n 4xnn2 and y2n n2n innthe
standardnviewingnwindownofnangraphingncalculator.nThennstatenhownthengraphsnsupportnyournsolutionninneachn
case.
(a) 4xnn2n n 2 (b) 4xnn2n n 2 (c) 4xnn2n n 2




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, DOWNLOAD THE Test Bank for Graphical Approach to Precalculus withLimit
n n n n n n n n n n

s 7th Edition Hornsby n n n




Test Form 2-A (continued)
n n n Name:nn

9. Give fn nxnn3x2n n2xnn6n andn gnnxnnn3xnn5, findneachnofnthenfollowing.nSimplifynthenexpressionnwhen
possible.  
 f
fn
(a)n nfn n gnnxn (b) nx (c)n thendomainnofn
g g

f nxnnhnn fn nxn 
nfn ngnnxn hn n 0
n n
(d)n (e)
h
 x 2nn6nnnnifnnxnn1
10. Considernthenpiecewise-definednfunctionndefinednby fn nxnn  .
 x ifn xnn1
(a) Graphn fn bynhand.

(b) Usenangraphingncalculatorntonobtainnannaccuratengraphninnthenwindown 5,n 10n byn 10,n 10.

11. Then pricen ofn postagen forn mailn isn definedn byn then functionn P(nx)n n 0.49xnn1,n wheren xn representsn then weightn onfthenle
tterninnounces.
(a) Usingndotnmodenandnthenwindown 0,n 5n byn 0,n 4,n graphnthisnfunctionnonnangraphingncalculator.
(b) Usenthengraphntonfindnthenpricenofnan2.42nouncenenvelope.

12. ThenmembersnofnthenNewnJazznbandnwantntonrecordnannewnCD.nThencostntonrecordnanCDnisn$4000nfornstudion
feesnplusn$1.50nforneachnCDnproduced.
(a) WritenancostnfunctionnC,nwheren xn representsnthennumbernofnCD’snproduced.
(b) Findnthenrevenuenfunctionn R,n ifneachnCDninnpartn(a)nsellsnforn$12.
(c) Writenthenprofitnfunction.
(d) HownmanynCD’snmustnbenproducednandnsoldnbeforenthenbandnearnsnanprofit?
(e) Supportnthenresultsnofnpartn(d)ngraphically.




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