The yearly birth rate in percent of a country is given by b()=-0.01 + 4 and the yearly death rate in percent of the same country is given by d(t)=-0.0125t +3.75, where t is the number of years since 1750. a. What would the area between the functions b(t) and d(t) represent? b. Find the area between the functions b(t) and d(t) from 1950 to 2000? Interpret your answer.