Answer
Those amino acids have hydrophobic R groups, so they should be located somewhere hydrophobic in the protein, either interacting with one another inside the protein or interacting outside with the hydrophobic part of a membrane bilayer.
Work Step by Step
They way to get to this answer is to use Fig. 5.14 to see the hydrophobic nature of the R groups for all of those amino acids, and then imagine where hydrophobic R groups can stably interact in the cell.
