The loudness L(x), measured in decibels, of a sound of intensity x, measured in watts per square meter, is defined as 
watt per square meter is the least intense sound that a human ear can detect. Determine the loudness, in decibels, of the sound.A particular Boeing 747 jetliner produces noise at a loudness level of 113 decibels. Find the intensity level (round to the nearest hundredth) in watt per square meter for this noise.
A. 0.20 watt per square meter
B. 0.80 watt per square meter
C. 0.40 watt per square meter
D. 0.10 watt per square meter
Answer: A
You might also like to view...
Solve.Find the points of intersection of the ellipse 16x2 + 25y2 = 400 and the line 5y + 4x = 20.
A. (0, -5), (0, -4) B. (0, 4), (5,0) C. (0, -4), (-5, 0) D. (0, 5), (4, 0)
List the intercepts of the graph. 
A. (1, 1) B. (0, 0) C. (1, 0) D. (0, 1)
Solve the problem.A formula for calculating the distance, d, one can see from an airplane to the horizon on a clear day is 
where x is the altitude of the plane in feet and d is given in miles. How far can one see in a plane flying at 23,000 feet? Round your answer to the nearest tenth mile, if necessary.
A. 1403 mi B. 185.0 mi C. 14,030 mi D. 167.5 mi
Find the length.
?
?
A. 1 inches
B. 
inches
C. 
inches
D. 
inches