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Unformatted text preview: 7 Math 103 FS 2007 = ' . _ Homework #7 Name; blag £145  ' _ Section#: PID: 7. r r ' , . _ r   Instructor: 7_
Read the introductory instructions. You must show all work to get credit. 1. (2 points) Find an equation for the inverses of gandh, Wherez‘ 7‘ We; 5/41"”:3Xﬁ3.
_ 7 __ ‘ , 3 _
WM“ W e: if: _ 2. (2 points) The graph of f is giVen below! I I 3) Draw the graph of f‘l. y= f(x):7
(“2%) —) (4,5) (4,6) "'Méa‘z‘} *  ’ w
(—2») —> (5,13 b) Evaluate f '1 («l). 39%:4 B Math 103 FS 2007 Homevvork #7 ) 3. (4 points) Given f (x _= —2x2 +122; 510. Draw the graph off and ‘ ﬁnd: I b) the domain of f
(in interval notation) c.) the range of f _
' (in interval notation) 4.(2 points) Teddy’s. Guitar Designs has determinedthat when'x hundred
guitars are built, the average cost per {guitar is given by 7 _
C(x) = 0.1x2 ~— 0.9:; + 2.425 , where C(x) is in hundreds of dollars. IIIIIIIIIWIIIIIIIIIIII ' IIIIIIIII'IIIIII‘IIIII
__litl.ll__!Il a) How many guitars should be built in order
to minimize the average cost per guitar? ¢5o ‘I.\ b) What is the minimum average cost per
' guitar? b
owe $610 not? __
2(M) I eerie/2e ...
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This note was uploaded on 03/19/2008 for the course MATH 103 taught by Professor James during the Spring '06 term at Michigan State University.
 Spring '06
 JAMES

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