Alpine Construction, Inc. has a $100,000 line of credit with the Bow Valley Bank. The annual percentage rate is the current prime rate plus 3:%. The balance on June 1 was $52,900. On June 8, Alpine borrowed $30,600 to pay for a shipment of lumber and roofing materials and on June 18 borrowed another $12,300 for equipment repairs. On June 28, a $35,000 payment was made on the account. The billing cycle for June has 30 days. The current prime rate is 71%. a. What is the finance charge on the account? 6. b. What is Alpine's new balance