After testing many samples,an electric company determined approximately 2 out of every 1,000 light bulbs on the market are defectve.Americans buy more than 1 billion light bulbs every year.Estimate how many of these bulbs are defective.
Setting up a proportion: 2/1,000 = x/1,000,000,000
Multiplying both sides by 1,000,000,000: x = 2,000,000,000 / 1,000 = 2,000,000
