the richter scale is used for measuring the magnitude of an earthquake the richter magnitude r is given by the model below where e is the energy in kilowatt hours released by the earthquake

The Richter scale is used for measuring the magnitude of an earthquake. The Richter magnitude R is given by the model below, where E is the energy (in kilowatt-hours) released by the earthquake.

R = 0.67 log (0.37E) + 1.46

Suppose an earthquake releases 14,500,000,000 kilowatt-hours of

energy. What is the earthquake’s magnitude? Round to three decimal places.

A. 4.400

B. 3.979

C. 8.268

D. 7.979

 

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