6.7 Exercise 144

Debt At the end of fiscal year 2015 the gross United States federal government debt was estimated to be approximately $18,600,000,000,000 ($18.6 trillion), according to the Federal Budget. The population of the United States was approximately 300,000,000 people at the end of fiscal year 2015.

1. ⓐ Write the debt in scientific notation.
2. ⓑ Write the population in scientific notation.
3. ⓒ Find the amount of debt per person by using scientific notation to divide the debt by the population. Write the answer in scientific notation.