You can use the definition of logarithm here.
The logarithmic equation that is equivalent to the given exponential function is given by:
Option C: [tex]x = -\rm log(\dfrac{8}{25})[/tex]
Given logarithmic equation is:
- [tex]2400 = 7500(10)^{-x}[/tex]
To find:
The equivalent exponential function to given logarithmic equation.
What is the definition of logarithm?
Logarithm is inverse function to exponentiation.
That means:
[tex]e^a = b \implies a = log_e(b)[/tex]
Transforming given equation to exponential form:
[tex]2400 = 7500(10)^{-x}\\\\
\dfrac{2400}{7500} = 10^{-x}\\\\
10^{-x} = \dfrac{8}{25}\\\\
-x = log_{10}(\dfrac{8}{25})\\\\
x = -log_{10}(\dfrac{8}{25})\\\\[/tex]
Since log with base 10 is simply written log, thus,
The logarithmic equation that is equivalent to the given exponential function is given by:
Option C: [tex]x = -\rm log(\dfrac{8}{25})[/tex]
Learn more about logarithm here:
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