The Customers
A certain business keeps a database of information about its customers.
- Let C be the rule which assigns to each customer shown in the table his or her home phone number. Is C a function? Explain your reasoning.
\text{Customer Name} \text{Home Phone Number} Heather Baker 3105100091 Mike London 3105200256 Sue Green 3234132598 Bruce Swift 3234132598 Michelle Metz 2138061124 - Let P\, be the rule which assigns to each phone number in the table above, the customer name associated with it. Is P a function? Explain your reasoning.
- Explain why a business would want to use a person's social security number as a way to identify a particular customer instead of their phone number.