Ononot — The intensity of an earthquake is measured on the Richter sc

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Exponentials & Logarithmshard

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The intensity of an earthquake is measured on the Richter scale: $R = \log_{10}(\frac{I}{I_0})$ . If one earthquake has amplitude $I_1$ and another has amplitude $I_2 = 100 \cdot I_1$ , by how many units does the second earthquake's Richter reading exceed the first?