Stella walks down a flight of stairs to the basement. then she walks back up the stairs and up another flight of stairs to the second floor of her house. each flight of stairs represents a change of 12 feet in height. how far is stella above the ground?

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site