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Verified Answer :

arnesklisura

It's B. You enter 4 instead of x on the right side and see what you get.

JeanaShupp

Answer:  B. -4

Step-by-step explanation:

We are given the function : \(f(x)=4x-20\)

To find the value of f(4), we substitute the x equals to 4 in the above function and then simplify it to get the answer.

i.e. At x= 4 , \(f(4)=4(4)-20\)

Now, simplify the above expression, we get

\(f(4)=16-20=-4\)

Therefore, the correct option is Option (B.) -4 .

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