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Taylor, Douglas – Exam 3 – Due: Dec 5 2007, 1:00 am – Inst: JEGilbert
1
This
printout
should
have
18
questions.
Multiplechoice questions may continue on
the next column or page – fnd all choices
beFore answering.
The due time is Central
time.
001
(part 1 oF 1) 10 points
±ind the value oF
x
when
x
= 5 log
2
‡
1
4
·
+ 7 log
3
9
.
1.
x
= 6
2.
x
=

6
3.
x
= 5
4.
x
=

5
5.
x
= 4
correct
6.
x
=

4
Explanation:
By properties oF logs,
log
2
‡
1
4
·
= log
2
‡
1
(2)
2
·
=

2
,
while
log
3
9 = log
3
(3)
2
= 2
.
Consequently,
x
= 14

10 = 4
.
keywords:
002
(part 1 oF 1) 10 points
IF $500 is invested at an annual interest rate
oF 7%, determine the value oF the investment
aFter 5 years when interest is compounded
continuously, leaving your answer in expo
nential Form.
1.
Amount = $500
e

35
2.
Amount = $500
e

0
.
35
3.
Amount = $5
e
0
.
35
4.
Amount = $500
e
0
.
35
correct
5.
Amount = $5
e
35
Explanation:
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 Spring '08
 CLARK,C.W./HOY,R.R

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