The US Population Is Approximated by the Function Where P(t)

Multiple Choice

The U.S. population is approximated by the function where P(t) is measured in millions of people and t is measured in 30-year intervals, with t = 0 corresponding to 1930. What is the expected population of the United States in 2020 ( t = 3 ) ? ​

A) 408.0 millions
B) 322.6 millions
C) 616.3 millions
D) 325.6 millions