Foreign-Born Population Suppose the percent of the U.S. population that is foreign born can be modeled by the equation y = 0.003x2 − 0.438x + 20.18, where x is the number of years after 1900.
a. Verify graphically that one solution to 12.62 = 0.003x2 − 0.438x + 20.18 is x = 20.
b. Use this information and factoring to find the year or years when the percent of the U.S. population that is foreign born is 12.62.
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