Female College Graduates The table in the next column lists the percentage P of the female population who had college degrees in selected years.
x | 1980 | 1990 | 2000 | 2010 |
P(%) | 12.8 | 18.4 | 23.6 | 33.0 |
Source: Bureau of the Census.
(a) Find a linear function P that models the data.
(b) Estimate when this percentage was between 18% and 28.5%.
(c) Did your estimate involve interpolation or extrapolation?
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