4. A depositor leaves her funds in the amount of $8,000 in a credit union for 270 days, and then withdraws S1500. At the end of one year, the credit union pays her $370 in interest. What is this depositor's average daily balance? What is this depositor's APY? Use the geometric or compounding interest approach. Show your work below. (5 points) 4. A depositor leaves her funds in the amount of $8,000 in a credit union for 270 days, and then withdraws S1500. At the end of one year, the credit union pays her $370 in interest. What is this depositor's average daily balance? What is this depositor's APY? Use the geometric or compounding interest approach. Show your work below. (5 points)