Answer:
The monthly payment is $158.90.
Explanation:
The furniture sells for $3,000. 
The store financing requires a 10% down payment.
The down payment is = 
 dollars
 dollars
Now the balance remains = 
 dollars
 dollars
We will add 8% in the balance for the APR, that is 5.91% as given in the table.

So, the balance becomes = 
 dollars
 dollars
As the store needs 18 monthly payments, so per month payment is =
 or $158.90
 or $158.90
Therefore, the answer is $158.90.