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
Caladiums and grasses

Caladiums and grasses

Grandmother’s Iris

Grandmother’s Iris

Unpacked but in love

Unpacked but in love

Getting Ready for Spring

Getting Ready for Spring

microtoms

microtoms

Unknown Plant

Unknown Plant