The Vandergrift Company has a revolving credit agreement with Commerce Bank under which the company can borrow up to $5 million at an annual interest rate of 1 percentage point above the prime rate (currently 9 percent). The company is required to maintain a 10 percent compensating balance on any funds borrowed under the agreement and to pay a 0.4 percent commitment fee on the unused portion of the credit line. Assume that Vandergrift has no funds in its account at Commerce Bank that can be used to meet the compensating balance requirement. Determine the annual financing cost of borrowing each of the following amounts under the credit agreement:
a. $1 million
b. $4 million