Find the limit algebraically.
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Mathematics
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Solve the problem.Use the formula ? = 10 log(I/Io), where the loudness of a sound in decibels is determined by I, the number of Watts/m2 produced by the sound wave, and 
What is the intensity in Watts/m2 of a noise measured at 48 decibels? (Round to the nearest tenth.)
A. 6.3 × 10-7 W/m2 B. 1.2 × 1014 W/m2 C. 4.8 × 10-10 W/m2 D. 6.3 × 10-8 W/m2
Mathematics
Write the fraction or mixed number as a decimal. Round to the nearest thousandth if necessary.10
A. 10.875 B. 3.125 C. 12.429 D. 1.875
Mathematics
Graph the equation. Identify the coordinates of the vertex.y = x2 + 1
A. (0,-1) B. (-1, 0) C. (0, 1) D. (1, 0)
Mathematics
Multiply.
? 
A. 
B. 
C. 1
D. 
Mathematics