Physics please help!

posted by linds

The far point of a nearsighted person is 5.8 m from her eyes, and she wears contacts that enable her to see distant objects clearly. A tree is 18.7 m away and 1.8 m high.

(a) When she looks through the contacts at the tree, what is its image distance?

(b) How high is the image formed by the contacts?

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