Question

use the following function rule to f(x) = \frac{40}{x} - 8 f(20) = \square

Explanation:

Step1: Substitute x=20 into f(x)

$f(20) = \frac{40}{20} - 8$

Step2: Calculate the fraction

$\frac{40}{20} = 2$

Step3: Subtract 8 from the result

$2 - 8 = -6$

Answer:

-6