ExamView - FINAL EXAM REVIEW 2011.tst
ExamView - FINAL EXAM REVIEW 2011.tst
ExamView - FINAL EXAM REVIEW 2011.tst
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<strong>FINAL</strong> <strong>EXAM</strong> <strong>REVIEW</strong> 2011<br />
Write the expression as a single logarithm.<br />
____ 73. 4 log x − 6 log (x + 2)<br />
a.<br />
x<br />
24 log<br />
x + 2<br />
c. log x(x + 2) 24<br />
b. log x 4 (x + 2) 6 d. none of these<br />
Expand the logarithmic expression.<br />
n<br />
____ 74. log 7<br />
2<br />
a. log 7<br />
n − log 7<br />
2 c. log 7<br />
2 − log 7<br />
n<br />
b.<br />
log 7<br />
n<br />
log 7<br />
2<br />
d. −n log 7<br />
2<br />
____ 75. log 3<br />
11p 3<br />
a. log 3<br />
11 ⋅ 3 log 3<br />
p c. log 3<br />
11 + 3 log 3<br />
p<br />
b. log 3<br />
11 − 3 log 3<br />
p d. 11 log 3<br />
p 3<br />
57<br />
____ 76. log b<br />
74<br />
1<br />
a.<br />
2 log 57 + 1 b<br />
2 log 74 c. log 57 − log 74<br />
b b b<br />
1<br />
b.<br />
2 log 57 − 1 b<br />
2 log 74 d. log 1<br />
b b<br />
(57 − 74)<br />
2<br />
____ 77. A construction explosion has an intensity I of 4.85×10 −2 W/m 2 . Find the loudness of the sound in decibels if<br />
L=10 log I<br />
I 0<br />
and I o<br />
= 10 −12 W/m 2 . Round to the nearest tenth.<br />
a. 146.9 decibels c. 106.9 decibels<br />
b. 115.8 decibels d. 48.5 decibels<br />
____ 78. Solve log(4x + 10) = 3.<br />
a. − 7 4<br />
b.<br />
495<br />
2<br />
c. 250 d. 990<br />
____ 79. Solve 3 log 2x= 4. Round to the nearest ten-thousandth.<br />
a. 10.7722 b. 5 c. 2.7826 d. 0.6309<br />
____ 80. Solve log 3x + log 9 = 0. Round to the nearest hundredth if necessary.<br />
a. 0.33 b. 0.04 c. 3 d. 27<br />
____ 81. Solve 2 log 4 − log 3 + 2 log x − 4 = 0. Round to the nearest ten-thousandth.<br />
a. 12.3308 b. 43.3013 c. 86.6025 d. 1875<br />
15
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