Many misconceptions about student loans can lead borrowers to make costly mistakes. Here are some of the most common myths.

See how we rate investing products to write unbiased product reviews. Weighted average cost ... called the discount rate, the interest rate used to calculate an investment's present value.

For example, it can seek to refinance its debt so it pays a lower interest rate or improve its ... The Bottom Line When companies calculate the weighted average cost of capital (WACC), beta ...