The amount of money in a bank account

Question

Identify the set of numbera that best describes each situation

Answer 1

 

 Well, since currency amounts are limited to STRICTLY 2 decimal places, you can

 limit the domain to RATIONAL numbers, as any 2 digit decimal number can be 

 written as a fraction over 100

 

 

 Negative numbers represent overdrawn accounts, so we can't ignore them.