We will use the formula;

where A is the amount
P is the prncipal also known as the initial amount
r is the rate
t is the time
n is the number of interest pay in a year
A is the amount after t years
From the question;
p = $1000
r = 2.5% = 0.025
t= 21
n = 12
Substitute the values into the formula

Evaluate:


A = $1689.5359
The value of the account will be $1689.5359