Please help!!!
What is the total amount, including interest, that the shoe store must pay on the loan?

(Goes with this: The shoe store manager borrowed $15,000.00 from the bank to purchase 1000 pairs of shoes. The bank charges a simple interest rate 4% per year on a loan to a business. If it takes 5 years to pay back the loan and interest, what is the total amount of interest that the shoe store will pay? Be sure to show your work).