Solve the problem.The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where xo = 10-3.What would be the readings x (to the nearest tenth) for magnitudes of 5.5 and 7.5?
A. 740.4 and 875.1
B. 2.7 and 2.9
C. 3.7 and 3.9
D. 2.2 and 2.6
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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A. domain: (-?, ?); range: [-?, - 2] B. domain: (-?, ?); range: (-?, ?) C. domain: (-?, ?); range: [- 2, ?) D. domain: [- 2, ?); range: (-?, ?)
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A. 9 B. 3 C. -3 D. Not a real number
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