Solve the problem.The loudness of sound can be measured on a decibel scale. The sound level L (in decibels) of a sound is given by 
where I is the intensity of the sound (in watts per square meter, W/m2) and 
A certain sound has intensity of 
Find the decibel value of this sound? (Round to the nearest whole number.)
A. 9 decibels
B. 204 decibels
C. 79 decibels
D. 89 decibels
Answer: D
Mathematics
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Simplify by taking the roots of the numerator and the denominator. Assume all variables represent positive numbers.
A. 
B. 
C. 
D. 
Mathematics
Solve the system of linear equations using the elimination method. x = 0 - y - z x - y + 5z=-164x + y = 3 - z
A. (-3, 2, 1) B. (1, 2, -3) C. (-3, 1, 2) D. (2, -3, 1)
Mathematics
Use the circle graph to solve the problem.The circle graph below gives the inventory of the women's department of a store.
What is the total inventory?
A. $187,708 B. $184,336 C. $180,964 D. $122,516
Mathematics
Provide an appropriate response.Use the special product (A + B)(A - B) = A2 - B2 to demonstrate a method for finding the product 41 ? 39 mentally.
What will be an ideal response?
Mathematics