wall outlets and regular lights should never be on more than a 20 amp breaker. if someone has stuffed a bunch of wires under a 40 amp breaker that go to all sorts of stuff then you are lucky to still have a house. as for your washer and dryer they should be on a 20 amp by them selves. if your dryer is electric (not gas)then it should be on a 30 or 40 amp all by its self. if your stove is electric (not gas) then it should be on a 50 amp by its self. never run more than 4 different receptacles on 1 breaker 20 amp. i have seen many houses burn because someone thought they could just add another wire to the breaker. remember the liability thing and let the land lord handle it and you will not be held accountable for a house fire. hope you get it worked out with out loosing your girls.