Answer:
$4779
Explanation:
First you need to write an equation to model this situation. In this case it's f(x)=1000(1.12)^x. College usually lasts 4 years, so to find the total amount of money they need to budget, you need to find the sum of f(0), f(1), f(2), and f(3).
This is roughly equivalent to 1000+1120+1254+1405, which equals 4779.