4a + b – 3 = 2b plz help

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

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost