if you buy a house something for $5000, and sell it for $15000 4 years later, is your yearly rate of return 75%, on average?

Or- perhaps you know the formula fo this equation?

ALSO-

what is the formula to figure out:

if you have 5000 to invest, and plug in a x% expected rate of return, and y as your years, what is the formula to figure out what you'll make?