Ask your parent to co-sign the loan, however that would make your parents responible and at risk if you default on the loan.
what right does a parent or guardianhave when a 18 year old is still living at home in pennsylvania
A teen parent living at home with their parents has the right and responsibility to raise their child and not leave it up to the grandparents to do it.
Both
It depends on who the home is willed to.
popular vernacular: at least one parent not living at home
If you are "permanently and totally disabled" as defined by Social Security and living in your parent's home, your parent can probably transfer the home to you without penalty.
In South Carolina a 17 year old can move out of their parent's home and get married. You need to be at least 16 years old and have a signed consent form to get married.
The parents are responsible for them until they are an adult. Yes, they get to determine where they live.
Assuming the parent is reporting their own child (the question isn't necessarily clear on that), and the child has yet to return home, yes. The parent can report the minor as a runaway, and the authorities will escort her home.
No, you must be 15 or older at the movies but at home it's your parent/guardians desision.
make the home comfortable for the child make the at home
As long a the child is living in the home the first day would apply, granting he/she has parent's that can vouch they are living in the home also.