This is an interesting bit of evidence from an era when many adults rented a room in someone's home or in a rooming house as their residence. Around this time there was even a short-lived single-panel cartoon called "Room and Board" (the "board" being an old term for the table).
Roomers in boarding houses sometimes got meals in the house (especially true of Normal students around campus) but others fended for themselves. This restaurant offered a meal plan for roomers. $3 in 1905 would be about $72 today.
--May 15, 1905 Ypsilanti Daily Press