The total voting-age populationP(in millions) in the United States from 1990 through 2014 can be modeled by 

P=184.64 + 0.7524t2/ 1 + 0.0028t2 , 0 < t < 24

wheretrepresents the year, witht= 0 corresponding to 1990.(Round your answers down to the nearest integer.)

(a) In which year did the total voting-age population reach195million?

(b) Use the model to predict when the total voting-age population will reach262million.