math

How to Tell If a Company Is Drowning in Debt

Like consumers, companies can take on too much debt. The debt-to-equity ratio offers one way to tell whether a leveraged business is taking on too much. Here's how you can do the simple math before you invest.

How to Calculate Free Cash Flow, and Why It Matters

Today brings part three in a our series on Mathanese -- the numbers behind investing's big equations. But as much as math may turn you off don't click away. There's nothing too complicated here, despite how intimidating money managers make it seem. Our subject: free cash flow.

The Impact of Better Teachers: $100 Trillion More in U.S. GDP

A new study says top-performing teachers turn out students who learn more than the students who had the worst teachers. And that extra learning has a huge impact on earnings -- and the nation's economy. Still, some educational experts say the study raises more questions than it answers.

Do U.S. Students' Scores Really Matter?

The popular narrative in the world of higher education is that American students aren't being taught as rigorously as those in other countries, and we're falling behind. But do the scores of high school students on math and science tests really matter for the nation's long-term economic outlook?