Respuesta :

f(4)=4*4+3=16+3=19


What you must do is to plug in 4 as x into the function to get your answer.

Answer:

the answer is 19

Step-by-step explanation:

1. You substitute the 4 for the x.

2. Next, your do 4 times 4 to get 16 and add to the 3 to equal 19

3. Finally, f(x)=19

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