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Exponential and Logarithmic Functions Practice Test

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 
 
Write the given equation in logarithmic form.
 

 1. 

logpracticelb_files/i0030000.jpg = 2,401
a.
logpracticelb_files/i0030001.jpg
c.
logpracticelb_files/i0030002.jpg
b.
logpracticelb_files/i0030003.jpg
d.
logpracticelb_files/i0030004.jpg
 
 
Write the given equation in exponential form.
 

 2. 

logpracticelb_files/i0050000.jpg logpracticelb_files/i0050001.jpg = logpracticelb_files/i0050002.jpg4
a.
logpracticelb_files/i0050003.jpg
c.
6–4 = logpracticelb_files/i0050004.jpg
b.
logpracticelb_files/i0050005.jpg
d.
(logpracticelb_files/i0050006.jpglogpracticelb_files/i0050007.jpg)logpracticelb_files/i0050008.jpg = 1,296
 
 
Evaluate the logarithmic expression.
 

 3. 

logpracticelb_files/i0070000.jpg
a.
logpracticelb_files/i0070001.jpg
c.
logpracticelb_files/i0070002.jpg
b.
logpracticelb_files/i0070003.jpg
d.
4
 

 4. 

logpracticelb_files/i0080000.jpg
a.
–0.0458
c.
1.9459
b.
0.9459
d.
1.0572
 

 5. 

logpracticelb_files/i0090000.jpg.
a.
logpracticelb_files/i0090001.jpg
c.
5
b.
logpracticelb_files/i0090002.jpg
d.
elogpracticelb_files/i0090003.jpg
 
 
Solve the given equation. If necessary, round to four decimal places.
 

 6. 

logpracticelb_files/i0110000.jpg
a.
2
c.
1.22
b.
22
d.
0.82
 

 7. 

logpracticelb_files/i0120000.jpg
a.
3.3111
c.
79.6443
b.
3.6376
d.
1.1027
 

 8. 

logpracticelb_files/i0130000.jpg = 1,296
a.
logpracticelb_files/i0130001.jpg logpracticelb_files/i0130002.jpg
c.
logpracticelb_files/i0130003.jpg logpracticelb_files/i0130004.jpg
b.
logpracticelb_files/i0130005.jpg logpracticelb_files/i0130006.jpg
d.
logpracticelb_files/i0130007.jpg –2
 

 9. 

logpracticelb_files/i0140000.jpg
a.
logpracticelb_files/i0140001.jpg
b.
logpracticelb_files/i0140002.jpg
c.
logpracticelb_files/i0140003.jpg
d.
logpracticelb_files/i0140004.jpg
 

 10. 

logpracticelb_files/i0150000.jpg
a.
logpracticelb_files/i0150001.jpg
b.
logpracticelb_files/i0150002.jpg
c.
logpracticelb_files/i0150003.jpg
d.
logpracticelb_files/i0150004.jpg
 

 11. 

logpracticelb_files/i0160000.jpg
a.
No solution
b.
logpracticelb_files/i0160001.jpg
c.
logpracticelb_files/i0160002.jpg
d.
logpracticelb_files/i0160003.jpg
 

 12. 

logpracticelb_files/i0170000.jpg
a.
1
c.
5
b.
3,125
d.
25
 

 13. 

logpracticelb_files/i0180000.jpg
a.
0.2604
c.
0.5074
b.
0.4907
d.
2.8333
 

 14. 

logpracticelb_files/i0190000.jpg
a.
logpracticelb_files/i0190001.jpg
b.
logpracticelb_files/i0190002.jpg
c.
logpracticelb_files/i0190003.jpg
d.
logpracticelb_files/i0190004.jpg
 

 15. 

An anthropologist finds there is so little Carbon-14 remaining in a prehistoric bone that instruments cannot measure it. This means there is less than 0.2% of the amount of Carbon-14 the bones would have contained when the person was alive. How long ago did the person die? (The half-life of Carbon-14 is 5730 years.)
a.
13,411 years
c.
45,020 years
b.
22,491 years
d.
51,374 years
 

 16. 

The Marriott family bought a new apartment three years ago for $65,000. The apartment is now worth $86,515. Assuming a steady rate of growth, what was the yearly rate of appreciation?
a.
8%
c.
12%
b.
10%
d.
14%
 

 17. 

All general exponential functions, logpracticelb_files/i0220000.jpg, pass through the point ...
a.
(0, 1)
b.
(1, 0)
c.
(a, 1)
d.
(0, a)
 

 18. 

logpracticelb_files/i0230000.jpg
a.
logpracticelb_files/i0230001.jpg
b.
logpracticelb_files/i0230002.jpg
c.
logpracticelb_files/i0230003.jpg
d.
logpracticelb_files/i0230004.jpg
 

 19. 

The graph of logpracticelb_files/i0240000.jpg is the graph of logpracticelb_files/i0240001.jpg...
a.
shifted up 3 and left 2
b.
shifted down 3 and left 2
c.
shifted up 3 and right 2
d.
shifted down 3 and right 2
 

 20. 

Which equation below could represent exponential decay? 
a.
logpracticelb_files/i0250000.jpg
b.
logpracticelb_files/i0250001.jpg
c.
logpracticelb_files/i0250002.jpg
d.
logpracticelb_files/i0250003.jpg
 

 21. 

Which equation below could represent ...
                 $400 invested at 6% interest compounded annually
a.
logpracticelb_files/i0260000.jpg
b.
logpracticelb_files/i0260001.jpg
c.
logpracticelb_files/i0260002.jpg
d.
logpracticelb_files/i0260003.jpg
 

 22. 

What is the domain of any general logarithmic function? 
a.
All real numbers
b.
All real numbers logpracticelb_files/i0270000.jpg
c.
All real number logpracticelb_files/i0270001.jpg 1
d.
All real numbers < 0
 

 23. 

Which graph below might represent logpracticelb_files/i0280000.jpg?
a.
logpracticelb_files/i0280001.jpg
c.
logpracticelb_files/i0280002.jpg
b.
logpracticelb_files/i0280003.jpg
d.
logpracticelb_files/i0280004.jpg
 

 24. 

Which graph below might represent logpracticelb_files/i0290000.jpg?
a.
logpracticelb_files/i0290001.jpg
c.
logpracticelb_files/i0290002.jpg
b.
logpracticelb_files/i0290003.jpg
d.
logpracticelb_files/i0290004.jpg
 

 25. 

Which equation below REQUIRES the use of logarithms to solve? 
a.
logpracticelb_files/i0300000.jpg
b.
logpracticelb_files/i0300001.jpg
c.
logpracticelb_files/i0300002.jpg
d.
logpracticelb_files/i0300003.jpg
 

 26. 

Which below is the “calculator-ready” form of the solution to:         logpracticelb_files/i0310000.jpg?
a.
logpracticelb_files/i0310001.jpg
b.
logpracticelb_files/i0310002.jpg
c.
logpracticelb_files/i0310003.jpg
d.
logpracticelb_files/i0310004.jpg
 

 27. 

Which expression below is equivalent to logpracticelb_files/i0320000.jpg?
a.
logpracticelb_files/i0320001.jpg
b.
logpracticelb_files/i0320002.jpg
c.
logpracticelb_files/i0320003.jpg
d.
logpracticelb_files/i0320004.jpg
 



 
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