What are the two types of powers given to the national government under the united states constitution?

The constitution actually gives three types of powers to the national government.
#1 Delegated powers, this is sometimes called expressed.
#2 Implied powers.
#3 Inherent powers. 

Currently, as of february 2016, an american traveling in france would be by the exchange rate. the weakness of the euro and the strength of the us dollar means that items in france cost less to an american than they otherwise would. of course, if this trend reverses and the us dollar weakens and the euro strengthens, such as was happening in early 2008, an american traveling in france would have an adverse experience because items would cost relatively more.