Explanation:
Let's look at what we know. We know that...
P=2000
r=0.04 (Change 4% to a decimal)
t=7 (25 years minus 18 years equals 7)
n=1
Since we are compounding each year, we need to use this equation:

Now just plug the numbers in: (Answer to #1:)

This equals 2631.86
When we round, this equals to $2,632. (Answer to #2).