Dr. Roberts brought a tuna salad sandwich to lunch . Unfortunately , there were two Staphylococcus aureus cells in the sandwich when he made in the morning . He left the sandwich in his warm car from 8:00 AM until 12:00 in the afternoon . If the generation time for S. aureus is 30 minutes , how many cells would have been in the sandwich if he ate it for lunch ? SHOW YOUR WORK !​