Solve the problem. 14) If the population of a certain country doubles in 10.05 years, find the growth rate k. Assume that the population follows the law of uninhibited growth. Round to the nearest tenth of a percent. 15) There are currently 80 million cars in a certain country, decreasing at a rate of 2% annually. How many years will it take for this country to have 56 million cars? Round to the nearest year