Respuesta :

DoctorCass
well, since f(12) indicates you to put 12 wherever there's a x.Just do the opposite wherever theres a 12 put a x.
Therefore f(x)=4x-20
SociometricStar

Answer:

[tex]f(x)=4x-20[/tex]

Step-by-step explanation:

We have been given that

[tex]f(12)=4(12)-20[/tex]

In order to find the function f(x), we can use the concept of substitution.

Let us suppose we need to find the value of the function f(x) at x = 12. Then, we can substitute x = 12 in the function f(x).

Here, [tex]f(12)=4(12)-20[/tex]

It means that x is replaced with 12.

So f(x) should be

[tex]f(x)=4x-20[/tex]

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