How did the locations of factories affect the environment? Choose two correct answers. 1. Air in urban areas became dirtier and led to disease.
2. Nearby waterways became polluted with chemicals.
3. Landfills became common due to increased garbage.
4. Much farmland became unfit for growing crops.
5. Human use of waterways decreased.

the correct answer is:   "   3.6 % " .

          →   the unemployment rate is:   " 3.6 % " .

explanation:

to calculate the "unemployment rate" :

the "unemployment rate"   =

  [# of people unemployed] /   [working age population]   * 100 %   ;

                =   [9 million] / [250 million]     *   100 % ;

    →     note:   the units of "million" cancel out;

                    since:   " {million} / {million} = 1 " ;

                =   (9 / 250)   * 100 %   ;

                = 0.036 * 100 % ;

                =   3.6 %

answer:   the unemployment rate is:   " 3.6 % " .

where is the picture?