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Quiz 7
You scored 82 out of 100
Question 1
Your answer is CORRECT.
Find and classify the relative extrema, if any, for the function
a)
a relative maximum at
x
= 0.
b)
a relative maximum at
x
= 0 and a relative maximum at
x
= 2.
c)
a relative maximum at
x
= 2.
d)
a relative maximum at
x
= 0 and a relative minimum at
x
= 2.
e)
a relative minimum at
x
= 0 and a relative maximum at
x
= 2.
f)
None of the above.
Question 2
Your answer is INCORRECT.
A leading producer of airplanes finds that the company's weekly cost of manufacturing
x
airplanes is given by the function
where
C
(
x
) is given in thousands of dollars. Use the marginal cost function to approximate the
cost of producing the 2001
st
airplane.
a)
$3,403.70
b)
$3,400,697.00
c)
$3,400,704.00
d)
$3,400,700.00
e)
$3,400.70
f)
None of the above.
Question 3
Your answer is CORRECT.
A music company produces a variety of electric guitars. The total cost of producing
x
guitars is
given by the function
where
C
(
x
) is given in thousands of dollars. Find the average cost function.
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 Fall '11
 Beatrice
 Math, Optimization, Fermat's theorem

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