Question

Use the following function rule to find f(25).

f(x) =
–4

x

f(25) =

must be a whole number

Answer 1

To find \( f(25) \) using the function rule \( f(x) = -\frac{4}{x} \), we will substitute \( x \) with 25:

\[
f(25) = -\frac{4}{25}
\]

This fraction simplifies to -0.16, which is not a whole number. Since the question specifies that the result must be a whole number, this implies there may have been an error in interpreting the function or restrictions.

If the function is indeed \( f(x) = -\frac{4}{x} \), then \( f(25) = -\frac{4}{25} \) is the correct calculation, but it does not produce a whole number.

Please verify the function or the requirements. If you need a whole number result, we would need either a different function rule or specific \( x \) values that yield whole numbers.