Solve the problem.The loudness of a sound can be quantified in units called decibels, where the number of decibels d is given by the formula 
What is the decibel rating of a sound having an intensity 
I0?
A. 30 decibels
B. 1000 decibels
C. 13 decibels
D. 3 decibels
Answer: A
Mathematics
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Find the indicated limit, if it exists.
?
?
A. 
B. 
C. 
D. 
E. The limit does not exist.
Mathematics
Graph the ellipse.
+ y2 = 1
A. 
B. 
C. 
D. 
Mathematics
Solve the given equation by finding the unknown value.? ? 9 = 144
A. 16 B. 9 C. 144 D. 1296
Mathematics
Solve. If necessary, round answers to the nearest hundredth.The following test scores were recorded for a student: 75, 67, 63, 63, 75, 77. Find the mean, median, and mode.
A.
| mean: 70 | median: 63 | mode: 77 |
B.
| mean: 71 | median: 70 | mode: 75 |
C.
| mean: 71 | median: 71 | mode: 63 |
D.
| mean: 70 | median: 71 | mode: 63 and 75 |
Mathematics