https://file.aiquickdraw.com/mathbot/file/17267273496388cbdg9pf.jpg

The problem asks for the value of \( f(4) \) given the function:

\[
f(x) = x^2 + 5x - 6
\]

To solve for \( f(4) \), we substitute \( x = 4 \) into the function:

\[
f(4) = 4^2 + 5(4) - 6
\]

Now, calculate step by step:

\[
4^2 = 16
\]
\[
5(4) = 20
\]
\[
f(4) = 16 + 20 - 6 = 36 - 6 = 30
\]

So, \( f(4) = 30 \).

The correct answer is \( \boxed{B} \).

Do you have any questions or want further details?

Here are some related questions you might want to explore:
1. What is the general form of a quadratic function?
2. How do you find the vertex of a quadratic function?
3. What are the roots of the function \( f(x) = x^2 + 5x - 6 \)?
4. How does the graph of a quadratic function look?
5. How do we solve quadratic equations using the quadratic formula?

**Tip:** Always substitute carefully and follow the order of operations when evaluating functions.

Diketahui f(x) = x^2 + 5x - 6. Nilai dari f(4) adalah ....

Learn how to evaluate the quadratic function f(x) = x^2 + 5x - 6 for f(4). This problem involves key concepts in algebra and quadratic functions, suitable for students in Grades 7-9.

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