High School

Given the function [tex]f(x) = -5x^2 - x + 20[/tex], find [tex]f(3)[/tex].

A. -28
B. -13
C. 62
D. 64

Answer :

After solving the given function for x = 3, the resultant answer is (A) -28.

What are functions?

The exact same number of elements from Y is assigned to each element of X via a mathematical function from a set X to a set Y.

The function's domain and codomain are respectively referred to as the sets X and Y as a whole.

A function is a relationship between a number of inputs and outputs.

Simply described, a function is an association between inputs in which each input is coupled to exactly one output.

So, we have the function:

(x) = −5x² − x + 20

Now, calculate to find the value when: x = 3

Given that, we must determine the value of the function at x = 3.

Set x = 3 in the provided function, f(x)

f(3) = −5(3)² − x + 20

f(x) = -45 - 3 + 20 = -28

Therefore, after solving the given function for x = 3, the resultant answer is (A) -28.

Know more about functions here:

https://brainly.com/question/17043948

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