What is the main duty of the united states supreme court?

to hear and rule on cases

to ratify or veto new laws

to appoint judges to lower federal courts

to sentence or parole convicted criminals

to hear and rule on cases

Explanation:

The Supreme Court of the United States is the "highest" court in the land. It has ultimate authority to hear appeals in nearly all cases decided in the federal court system.

either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.

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 % " .