Question
Find the relative rate of change of $f(x)$ at the indicated value of $x$. Round to three decimal places.$$f(x)=420-5 x ; x=25$$
Step 1
The derivative of a constant is zero, so the derivative of $420$ is $0$. The derivative of $-5x$ is $-5$. Therefore, the derivative of $f(x)$ is $-5$. Show more…
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