Factor completely.
4 - 12x + 9x^2

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.