The world population was approximately 7.405 billion in 2017 with an annual growth rate of 1.06%- At this growth rate, the world population P(t) (in billions) can be represented by P(t) = 7.405(1.0106), where t is the number of years after 2017. Round values to the nearest tenth when necessary. (Source: CIA World Factbook)a. P(0) = b. P(3)