How many time zones are there in the united states?

What is an attack against a country called?

For each of the following examples of data, determine which scale of measurement is used. a) the number of miles joggers run per week. b) the starting salaries of graduates of mba programs c) the months in which a firm's employees choose to take their vacations. d) the final letter grades received by students in a math course.

Personal finance skills have the most significant impact on an individual’s