Answer :

To evaluate the function
$$
f(x) = -5x^2 - x + 20
$$
at $x = 3$, follow these steps:

1. Substitute $x = 3$ into the function:
$$
f(3) = -5(3)^2 - (3) + 20.
$$

2. Calculate the square of $3$:
$$
(3)^2 = 9.
$$

3. Multiply by $-5$:
$$
-5 \times 9 = -45.
$$

4. Replace back into the function:
$$
f(3) = -45 - 3 + 20.
$$

5. Combine the values:
$$
-45 - 3 = -48 \quad \text{and} \quad -48 + 20 = -28.
$$

Thus, the value of the function at $x=3$ is
$$
f(3) = -28.
$$

Thanks for taking the time to read Given the function tex f x 5x 2 x 20 tex find tex f 3 tex A 28 B 13 C 62 D 64. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada