Find the quadratic function that best models the data, with x representing the number of years after 1980 and y representing the percent.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The table gives the percent of total households that have married couples for selected years from 1982 and projected to 2050. Complete
parts (a) through (C) below.
Year
Percent
Year
Percent
1982
60
2020
2030
47
1990
56
46
2000
2010
54
2040
2050
45
50
44
a. Find the quadratic function that best models the data, with x representing the number of years after 1980 and y representing the percent.
(Type integers or decimals rounded to three decimal places as needed.)
Transcribed Image Text:The table gives the percent of total households that have married couples for selected years from 1982 and projected to 2050. Complete parts (a) through (C) below. Year Percent Year Percent 1982 60 2020 2030 47 1990 56 46 2000 2010 54 2040 2050 45 50 44 a. Find the quadratic function that best models the data, with x representing the number of years after 1980 and y representing the percent. (Type integers or decimals rounded to three decimal places as needed.)
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