<h2>
Answer:</h2>
The dollars worth of zinc which is contained in hair cut in the United States every year is:
$ 2,220,000
<h2>
Step-by-step explanation:</h2>
The total kilograms of hair that are cut in the United States are: 25,000,000 kg
Also, the amount of zinc present in 1kg of hair is: 0.0002 kg
Hence, the amount of zinc present in 25,000,000 kg of hair is:
25,000,000×0.0002=5,000 kg
Also, cost of 1 kg of zinc= $ 444
Hence, cost of 5,000 kg of zinc will be: 5,000×444
Hence, cost of 5,000 kg of zinc=$ 2,220,000
