A national census bureau predicts that a certain population will increase from 31.4 million in 2000 to 62.3 million in 2060. Complete parts (a) through (c) below. (a) Find an exponential function of the form f(t) = yob' for these data, in which t=0 corresponds to 2000 and f(t) is im millions. f(t)= (Use integers or decimals for any numbers in the expression. Round to four decimal places as needed.) (b) What is the projected population in 2030? In 2050? In 2030, the population is projected to be million. (Round to one decimal place as needed.) In 2050, the population is projected to be million. (Round to one decimal place as needed.)