Mathematics, 11.11.2020 02:20 katiek451
The function R(x) = -0.0065x² +0.23x + 8.47 models the American marriage rate R (the
number of marriages per 100 population) x years after 1960. Based on this function, in what
year was the marriage rate the highest? (Hint: The vertex of a parabola is the maximum or
minimum.)
please help
Answers: 2
, then 
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The function R(x) = -0.0065x² +0.23x + 8.47 models the American marriage rate R (the
number of marr...
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