Solve.The loudness of a sound can be approximated by the formula d = 10 log 
, where d is the number of decibels. The higher the value of d, the louder the sound. Find the number of decibels when 
and 
A. 14 decibels
B. 10,000 decibels
C. 40 decibels
D. 4 decibels
Answer: C
Mathematics
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Calculate the area of the surface S.S is the portion of the plane 4x + 5y + 2z = 2 that lies within the cylinder 
A. 6
?
B. 2?
C. 12
?
D. 6
Mathematics
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
(log6 x + log6 y)
A. log6 
B. log6 
+ log6 
C. log6 
D. 
Mathematics
Use De Moivre's Theorem to find the indicated power of the complex number. Write your answer in standard form a + bi.
10
A. - 
+ 
i
B. 
- 
i
C. 
+ 
i
D. - 
- 
i
Mathematics
Find the volume of the solid. Use 
for ?.
A. 30 cu in. B. 90 cu in. C. 16 cu in. D. 300 cu in.
Mathematics