The population of a certain country since January 1, 1910 can be approximated by the model below, where t is the number of years since January 1, 1910.

P(t)=56.58 / 1+7.2e^−0.02706t

where P is the population of this country (in millions) tt years after January 1, 1910.

(a) What was the population of this country on January 1, 1910?
__________ million

(b) Use the function to approximate the population of this country on January 1, 1927. Round your answer to the nearest whole number.
__________ million

(c) In what year will the population reach 21 million? Round your answer to the nearest year.
__________ years