7. As of 2018 the world population is 7.616 billion people and is growing at a rate of 1.1% per ye a) Write and equation to model the population growth, where P(t) is population in billions of people and t is time in years. b) What is the predicted population for 2050? c) As of 2018 we have an excess of natural resources and are able to support a population of about 9 billion people. However, natural resources are being depleted at about 1% per year. When will we no longer have enough natural resources to support the growing population?