The total expenditures (in millions) of current dollars for pollution abatement and control during the period from 2000 through 2019 can be approximated by the function P(x) 171.31007, where x 0 corresponds to the year 2000 (a) In what year would the total expenditures reach $223 million dollars? (b) If this model remains accurate, when would the total expenditures reach $419 million? (a) The expenditures would reach $223 million in the year late (Simplify your answer. Type a whole number)