The population of a country is decreasing, and its population (in millions) over six years is shown in the table. find an exponential regression curve to model this situation. a) y = 54.3(.918x) b) y = 67.2(.887x) c) y = 72.8(.842x) d) y = 83.9(.903x)

It is definitely not A, and definitely not B, and D look better then C. So it's probably D. Because the numbers 54.3 and 67.2 are way too low and .887 is too low for the percent. A is a simply outrageous answer for this problem. C goes down to quickly so D is the reasonable answer.