In 2010, the rate of change of the world's population was approximately 0.07831 billion per year. The world population was estimated to be 6.9 billion in 2010. Answer parts a through c below. a. Write an equation to model the population P (in billions), in terms of t, where t is the number of years since 2010 (t=0 corresponds to 2010).
P=enter your response here (Remember to write the equation in terms of t.)