Derivative of (30-x)/100

1. The derivative of a constant times a function is the constant times the derivative of the function.

   1. Differentiate $30 - x$ term by term:

      1. The derivative of the constant $30$ is zero.

      2. The derivative of a constant times a function is the constant times the derivative of the function.

         1. Apply the power rule: $x$ goes to $1$

         So, the result is: $-1$

      The result is: $-1$

   So, the result is: $- \frac{1}{100}$

The answer is:

$$- \frac{1}{100}$$