The U. S. Bureau of the Census predicted that the population of Pennsylvania would be about 12.7 million in 2010 and then would increase by about 0.24 million per year until 2018. Which of the following models predicts the population, y, of Pennsylvania (in millions) in terms of x, the number of years since 2010. y = 0.24x + 12.7 y = -12.7x + 0.24 y = -0.24x + 12.7 y = 12.7x + 0.24