Landlord Tenant

If I gave 90 days notice I am moving, am I responsible for remaining lease?
I have lived in my current rental house for three years. I have six months left on the lease. I gave landlord 90 days notice that I am moving as I have purchased a house. Can I be held liable for the remaining three months?
What rights does a tenant have to a roommate without notifying landlord?
Tenant A is renting a duplex. Tenant A and Landlord A entered into an informal agreement with no lease. Tenant A has allowed a friend (Tenant B) to move in without notifying Landlord A. Landlord A finds out that Tenant B has moved in and tells Tenant A that Tenant B must move out or Tenant A will be evicted. What are Tenant A's rights?
What action can landlord take against tenant who has not paid rent?
Tenant A has failed to pay rent and has violated other lease obligations. What actions can Landlord A take against the tenant?
How does tenant in military terminate lease without penalty?
Tenant A has entered into a lease and after which enlisted into military service. Can Tenant A terminate the lease without breaching it?
How long does a landlord have to return security deposit to tenant after lease is up?
Tenant A fulfilled the terms of the lease agreement with Landlord A. Tenant A gave Landlord A 30 days notice, kept the property in excellent condition, returned the keys and left a forwarding address. Tenant A is expecting the security deposit to be refunded, but Landlord A has not refunded the security deposit nor discussed it with Tenant A. Will Tenant A receive the refunded security deposit and when?