The correct answers are: decides whether a law is unconstitutional,resolves disputes about laws,rules on legal cases.
The U.S Judicial Branch is formed by the U.S Supreme Court and some other federal courts. These federal courts are in charge of handling federal cases such as bankruptcy,tax issues, among others.
Its main responsibility is to interpret the law that is to say it decides what is the correct interpretation of the law whenever there are disputes over it.
In addition,it may conclude that a law is unconstitutional.Therefore, in any case, every decision that The Court makes will establish precedents.
