Scientists are monitoring the populations of two insect species in a remote location in Alabama. They estimate that the
current population of insect A is 2.5 million. But it's declining at the rate of 4% per year because of habitat loss. The
estimated population of insect B is 1.2 million, and it's increasing at the rate of 200,000 per year. Let x represent the
population of each insect species in millions, and y represent the elapsed time in years. Which equation can be used to
determine how long it will take for the populations of the two species to be equal?