The population of Ukraine in 2015 was 44.4 million and the expected continuous annual rate of change k of the population is -0.006.+ (a) Find the exponential growth model P = Cekt for the population by letting t = 5 correspond to 2015. (Round the leading coefficient to three decimal places.) P = (b) Use the model to predict the population of the country in 2031. (Round your answer to two decimal places.) million (c) Discuss the relationship between the sign of k and the change in population for the country. Because k 0, the population is decreasing