A population of 422,000 increases by 12% each year. What is the approximate population after 5 years?

Here are formulas we choose from

Increasing: y = a (1 + r) x Decreasing: y = a (1 - r) x

we want increasing

422000 (1+.12) ^5

743,708 (you don't want the decimals because you can't divide a human ...)