whats wrong with this plant

whats wrong with this plant

my friend has a house plant that the tips keep turning brown, and some of the leaves seem quite washed out in color. can anyone tell me whats wrong with it or how to fix it? entire plant, brown tipped leaves near bottom, washed out looking leaves near top Photobucket brown tips Photobucket washed out looking leaves, much less green color than other leaves Photobucket
My Apartment (very unique subject name I know)

My Apartment (very unique subject name I know)

Jewels of Opar and Eggplant

Jewels of Opar and Eggplant

Black Forest Cake

Black Forest Cake

plant ID request

plant ID request

Living room pics newly updated

Living room pics newly updated

Pretty blue flower

Pretty blue flower