Day 1: - Radical Math

1 - Bank cards, issued by banks (for example, Visa, MasterCard and Discover Card) 2 - Travel and entertainment (T&E) cards, such as American Express and Diners Club . 3 - House cards that are good only in one chain of stores (Sears is the biggest one of these, followed by the oil companies, phone companies and local department stores.) 4 - You may also be familiar with what is known as an ... ................
................