Solve the problem.The Richter Scale measures the magnitude M of an earthquake. An earthquake whose seismographic reading measures x millimeters 100 kilometers from the epicenter has magnitude M given by M(x) = log 
. Give the magnitude of an earthquake that resulted in a seismographic reading of 97,731 millimeters 100 kilometers from its epicenter.
A. 8.0
B. 7.0
C. 9.0
D. 2.0
Answer: A
Mathematics
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