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The total voting-age population P (in millions) in the United States from 1990 through 2014 can be modeled by
P = 184.64 +0.75241² 0 st≤ 24
1+0.0028t²
where t represents the year, with t= 0 corresponding to 1990.+ (Round your answers down to the nearest integer.)
(a) In which year did the total voting-age population reach 210 million?
(b) Use the model to predict when the total voting-age population will reach 263 million.