View Policies Current Attempt in Progress Explain in words what the integral represents and give units. where f() is the rate at which the world's population is growing in year , in billions of people per year. The integral represents the The units are eTextbook and Media Hintwhere f() is the rate at which the world's population is growing in year , in billions of people per year. The integral represents the net world population growth between 1981 and 1999. The units are net change in time between 1981 and 1999. average rate of world population growth between 1981 and 1999. rate of change in world population growth between 1981 and 1999. eTextbook and Media HintThe units are e Textbook billions of people per year. billions of people. years per billion people. Hint years. Save for Later A