HOW DO YOU SEE IT? The graph shows the populations (in millions) of Bulgaria and Tajikistan from 2006 through 2013 using exponential models. (Source: U.S. Census Bureau)
(a) Determine whether the population of each country is modeled by exponential growth or exponential decay. Explain your reasoning.
(b) Estimate the year when the two countries had the same population. What was this population?
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