Use the properties of logarithms to rewrite and simplify the logarithmic expression.
?
log2 (42 · 74)
?
A. 4 + 9 log2 4
B. 9 + 4 log2 4
C. 2 + 2 log2 7
D. 4 + 4 log2 7
E. 2 + 4 log2 7
Answer: D
Mathematics
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defined by 
, 
, 
.
A. 
= 
, 
= 
, 
= 2
B. 
= 
, 
= 3, 
= 
C. 
= 
, 
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= 
D. 
= 
, 
= 
, 
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A. rate B. base C. portion
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Rewrite the following as indicated.
(Write as a percent.)
A. 410% B. 405% C. 400% D. 80%
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