In 2010 the population of the United States was approximately 310 million with a 0 97 annual growth rate At this rate the population P 1 in millions can be approximated by P t 310 1 0097 where I is the time in years since 2010 Part 1 of 5 a Is the graph of P an increasing or decreasing exponential function The graph of P is an increasing exponential function Part 1 5 Part 2 of 5 b Evaluate P 0 and interpret its meaning in the context of this problem P 0 This indicates that the U S population was approximately million in the year