Question 206756
 Using Richter scale equation M = log[I/I(o)] where M is the magnitude of an earthquake, I is the intensity of the shock waves, and I(o) is the measure of the intensity of a zero-level earthquake. 
On May 21, 2003, an earthquake struck Northern Algeria. The quake had an intensity of I = 6,309,573I(o). Find the Richter scale magnitude of the earthquake. Round to the nearest tenth. 
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M = log[6,309,573*I(o)]/I(o)
M = log[6,309,573] 
M = 6.79999..
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Cheers,
Stan H.