How long for a letter to go from new york to san franciso?

Depending on the class that your letter went, it could take two days or one week. Traditionally, first class mail almost the next day.

You not be doing this in a quiz. if you actually studied your work you would know the answer. the answer though is that they would use gdp per capita because it measures a smaller portion (person). this could show individual growth per person in the country.