Answer:
$6
Explanation:
To find how much Nathan will get in 9 months, we use the formula:

Let's break down the variables that we have.
I = ?
P = 400
r = 2% or 0.02
t = 9/12 or 0.75
The time is 0.75, because the interest is applied annually.
Now let's plug in our values to the formula.




Nathan will earn $6 in interest in 9 months.