Respuesta :

Answer: 19

Step-by-step explanation:

[tex]f(4)=(4)^2+3=16+3=19[/tex]

Answer:

f(4) = 19

Step-by-step explanation:

f(x) = x^2 + 3

plug in 4 for the xs

f(4) = 4^2 + 3

f(4) = 16 + 3

f(4) = 19