# Need math help for finding a linear function

Aug 28th, 2017
Anonymous
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Question description

The idea of a large, stable middle class (defined as those with annual household incomes in 2010 between \$39,000 and \$118,000 for a family of three), is central to America's sense of itself. But the U.S. middle class has been shrinking steadily from 61% of all adults in 1971

(t = 0)
to 51% in 2011
(t = 4),
where t is measured in decades. Research has shown that this decline is approximately linear.
Find a linear function f(t) giving the percentage of middle-income adults in decade t, where t = 0 corresponds to 1971.

(Top Tutor) DrCS
School: Cornell University

Question: The idea of a large, stable middle class (defined as those with annual household
incomes in 2010 between \$39,000 and \$118,000 for a family of three), is central to America's
sense of itself. But the U.S. midd...

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