Concept explainers
America is gelling older. The graph shows Ute projected elderly U.S. population for ages 65-84 and for ages 85 and older.
Source: U.S. Census Bureau
The formula
a. Use the $$$ to find the projected increase in the number of Americans ages 65-84, in millions, from 2030 to 2060. Express this difference in simplified radical form.
b. Use a calculator and write your answer in part (a) to the
nearest tenth. Dues this rounded decimal overestimate or underestimate the difference in the projected data shown by the bar graph on the previous page? By how much?
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