Pleasantburg has a population growth model of P(t) =at to the second power +bt+Po where Po is the initial population. Suppose that the future population of Pleasantburg T years after January 1, 2012 is described by the quadratic model P(t) =0.9t to the second power + 6t +23,000. What is the population of Pleasantburg on January 1, 2021? Round your answer to the nearest person.