Question

Given the function f(x) = −5x2 − x + 20, find f(3). −28 −13 62 64

Answer 1

A: -28

Explanation:

Given : Function

We have to find the value of given function at x = 3

Consider the given function

Since, we have tof ind the value of function at x = 3

Put x = 3 in given function f(x)

Answer 2

Option (a) is correct.

The value of given function
`f(x)=-5x^2-x+20` at x = 3 is -28

Explanation:

Given : Function
`f(x)=-5x^2-x+20`

We have to find the value of given function at x = 3

Consider the given function
`f(x)=-5x^2-x+20`

Since, we have tof ind the value of function at x = 3

Put x = 3 in given function f(x)

`f(3)=-5(3)^2-(3)+20`

Simplify, we have,

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

Thus, the value of given function
`f(x)=-5x^2-x+20` at x = 3 is -28