Respuesta :

⌊x⌋ floors the input x. It will always round x down to the an integer that is lower.
Then that is multiplied by 4.
This results in
                                      g(5.7) = 4⌊5.7⌋ 
                                      g(5.7) = 4 * 5
                                      g(5.7) = 20
The answer to this question is 20.