Solve the problem.A certain noise produces 5.08 × 10-5 Watts/m2 of power. What is the decibel level of this noise? The level of sound intensity in decibels (dB) is 
where ? (beta) is the number of decibels, I is the sound intensity in W/m2, and 
(Round to the nearest decibel.)
A. 8 decibels
B. 177 decibels
C. 67 decibels
D. 77 decibels
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Add or subtract as indicated. Simplify, if necessary.- 
+ 
A. 
B. 
C. - 
D. - 
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Use a graphing calculator to find the zeros of the function. Round to three decimal places.f(x) = x2 - 2x - 9
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