Question

1 use the following function rule to find f(4). f(x) = -5x + 7 f(4) =

Explanation:

Step1: Substitute x = 4 into the function

We have the function \( f(x) = -5x + 7 \). To find \( f(4) \), we substitute \( x = 4 \) into the function. So we get \( f(4) = -5\times4 + 7 \).

Step2: Calculate the value

First, calculate \( -5\times4 = -20 \). Then, add 7 to -20: \( -20 + 7 = -13 \).

Answer:

\( -13 \)