If you look on your pokenav its the city in the middle of the map its a long red bar. To get there you need to go to Slateport city from dewford town then go north.
the daycare in Pokemon ruby is between verdanturf city and mauville city
on mauville city
Mauville
New Mauville city
in mauville city after you have helped rydel
in a house in mauville city
you go to mauville city
in between mauville and that other city
The Day Care in Pokemon Ruby is on the route West of Mauville City.
To get flamethrower on Pokemon ruby you have to learn it or you just have to buy it at the game corner in mauville city.
Cutters house mauville city
it is Mauville gym