Choose the One Alternative That Best Completes the Statement or Answers

question 277

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Solve the problem.
-The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function $$M ( x ) = \log \left( \frac { x } { x _ { 0 } } \right) \text {, where } x _ { 0 } = 10 ^ { - 3 }$$ What would be the readings x (to the nearest tenth) for magnitudes of 4.5 and 7.5?

• A) 653.2 and 875.1
• B) 2.7 and 2.9
• C) 2 and 2.6
• D) 3.7 and 3.9

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