Respuesta :

Note:

Your function is a little ambiguous. I think you may have tried to write your function such as:

f(x) = 4x + 3

I am assuming your function as:

f(x) = 4x + 3

Answer:

The value of f(3) = 15

Step-by-step explanation:

Given

Assuming the function is

f(x) = 4x + 3

To determine

The value of f(3)

The value of f(3) can be determined by substituting x = 3 in the function

f(x) = 4x + 3

substitue x = 3 in the function

f(3) = 4(3) + 3

f(3) = 12 + 3

f(3) = 15

Therefore, the value of f(3) = 15