OpenStax, Algebra and Trigonometry 2e §6.6 Exponential and Logarithmic Equations · Exercise 71 · Algebra · Exponentials & logarithms

Exponential and Logarithmic Equations · Exercise 71

Solve for the indicated value, and graph the situation showing the solution point.

The formula for measuring sound intensity in decibels $D$ is defined by the equation $D = 10 l o g (\frac{I}{I _{0}}),$ where $I$ is the intensity of the sound in watts per square meter and $I_{0} = 1 0^{- 12}$ is the lowest level of sound that the average person can hear. How many decibels are emitted from a jet plane with a sound intensity of $8.3 \cdot 1 0^{2}$ watts per square meter?

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OpenStax, Algebra and Trigonometry 2e · §6.6 Exponential and Logarithmic Equations · Exercise 71

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