Precalculus Practice Exam---Solutions To Problems

Part 3 Test 3



Problem 1:


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The term tex2html_wrap_inline233 is valid if x>5. The term tex2html_wrap_inline237 is valid if x>6. The term tex2html_wrap_inline241 is valid if x>-5. The term tex2html_wrap_inline245 is valid if tex2html_wrap_inline247 or when x>6 or x<5. The common domain is the set of real numbers x>6.




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Problem 2:


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Problem 3:


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The term tex2html_wrap_inline291 is valid when x>5. The term is tex2html_wrap_inline295 when x>6. The term tex2html_wrap_inline299 is valid when x<8. The domain is the set of real numbers greater than 6 and less than 8.


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x=7




Problem 4:


Points : tex2html_wrap_inline325


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Problem 5:


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1=a+b(4)


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10 = 4a+b(5)


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a =3


1 = 3 + b


b = -2


6 = 3-2+c


c=5


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Problem 6:



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Sun Jun 22 21:16:15 MDT 1997

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