Final answer:
Expressed powers are specific powers granted to the national government by the Constitution, including the power to coin money and to tax. These are explicitly mentioned in Article I, Section 8.
Step-by-step explanation:
The student asked which of the following are expressed powers: interstates, passports, coin money, and tax. Expressed powers are those specifically listed in the Constitution and granted to the national government. Among the examples provided, the powers to coin money and to tax are clearly expressed powers.
The Constitution, particularly in Article I, Section 8, explicitly enumerates these powers to the legislative branch, confirming the power to coin money and to levy and collect taxes as vital functions of the federal government. While the issuance of passports falls under the federal government's authority to conduct foreign affairs, it is not considered an expressed power in the way that coining money and taxing are. The term 'interstates' might refer to the regulation of interstate commerce, which is indeed an expressed power.