Contemporary Mathematics for Business & Consumers 8th Edition by Robert Brechner,Geroge Bergeman

Exercise 114

According to the Financial Times , in a recent recession, outstanding consumer credit in the United States fell to $2,460,000,000,000- the seventh monthly decline. Most of the drop came as a result of consumers paying down revolving debt such as credit cards.
a. Write this number in word form.
b. Round this number to the nearest hundred billion.