The populations of each of these countries in 1990 was not 1,000,000, but was actually much larger. In 1990, Mexico had a population of about 90,000,000 and Ethiopia had a population of about 50,000,000. If the growth rates of these two countries stay constant, determine the year that Ethiopia's population would exceed that of Mexico. Do this both graphically (include the graph as part of your answer) and symbolically