Spring 2005
Name _________________________________
You must show all work on this paper to receive credit.
Solutions without correct supporting work will not be accepted.
All
answers must be exact unless indicated otherwise.
You must omit one problem by clearly writing “OMIT” by the problem.
If you do not omit a problem, I will omit the last one for you.
When you omit one part of a problem, you have omitted the
entire problem.
1.
a.
Use your calculator to approximate
12
log
3
to 4 decimal places.
b.
Solve using the manual method of your choice.
50
10
25
2
5
2
2
2
2
=
+
=

y
x
y
x
2.
a.
Write the expression as the logarithm of a single quantity.
z
y
x
ln
ln
4
1
ln
2
+

b.
Suppose $10,000 is invested at interest rate k, compounded continuously, and grows to $13668.38 in 5 years.
Find the interest rate
algebraically
.
Show all your work.
Round your answer to the nearest one hundredth of a
percent.
3.
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 Spring '08
 DUCK
 Algebra, Gaussian Elimination, Merchant, Natural logarithm, Logarithm, $10,000, Gaussâ€“Jordan Elimination

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