Costs and Financial Aid. The cost of attendance is the total amount of tuition, fees, room and board, books, supplies, and other estimated school expenses. Financial aid is a combination of grants, loans, scholarships, and work-study employment designed to help offset the total cost of attendance.
One of the major problems for an investor looking at that 10% average return figure and mistakenly expecting to realize a nice yearly profit from investing in the S&P 500 is inflation. Adjusted for inflation, the historical average annual return is only around 7%.
This means that an investment of $100 that yields an arithmetic return of 50% followed by an arithmetic return of -50% will result in $75, while an investment of $100 that yields a logarithmic return of 50% followed by a logarithmic return of -50% will come back to $100.