#### Answer

a) P'(2009) is the rate of change of the population of Freedonia in 2009.
b) $$P(2010) \approx 5.2\ million$$

#### Work Step by Step

a) P'(2009) is the rate of change of the population of Freedonia in 2009.
b) If we know the rate of change is 0.2 per unit, if we go up by one unit, we can find:
$$P(2010) \approx 5\ million + 0.2 = 5.2\ million$$