Use a calculator with a key or a key to solve the following. The exponential function f(x) = 564(1.032) models the population of a country, f(x), in millions, x years aft 1974. Complete parts (a)-(e). a. Substitute 0 for x and, without using a calculator, find the country's population in 1974. The country's population in 1974 was million. b. Substitute 22 for x and use your calculator to find the country's population, to the nearest million, in the year 1996 as modeled by this function. The country's population in 1996 was million. c. Find the country's population, to the nearest million, in the year 2018 as predicted by this function. The country's population in 2018 will be million. d. Find the country's population, to the nearest million, in the year 2040 as predicted by this function. The country's population in 2040 will be million. e. What appears to be happening to the country's population every 22 years? OA. It appears that the population is growing by a factor of 3 every 22 years. OB. It appears that the population is growing by a factor of 2 every 22 years. OC. There does not appear to be a pattern. D. It appears that the population is decreasing by a factor of 1 every 22 years.