A startup can have millions of venture dollars in the bank and not get approved for a credit card. That's because old-school banks and credit institutions want to see a credit history, which few new companies have, before issuing that precious piece of plastic. Henrique Dubugras and Pedro Franceschi, both age 22, founded Brex last year in order to address this problem. The company gives corporate credit cards to startups based on their available cash balance — including money raised through venture — rather than credit history. It launched out of stealth in June and has 1,000 customers signed up.