To transform the function \( f(x) = x^2 + 12 \) into \( f(x - 3) \), we need to replace \( x \) with \( x - 3 \) in the original function. The steps to perform this transformation are:
- Subtract 3 from \( x \) (resulting in \( x - 3 \)).
- Square \( (x - 3) \).
- Add 12 to the squared result.
Therefore, the correct order of operations is:
Subtract 3 from \( x \), square \( (x - 3) \), and add 12.