You've just joined the investment banking firm of Dewey, Cheatum, and Howe. They've offered you two different salary arrangements. You can have $90,000 per year for the next two years, or you can have $77,000 per year for the next two years, along with a $20,000 signing bonus today. The bonus is paid immediately and the salary is paid in equal amounts at the end of each month . Assume the interest rate is 7 percent compounded monthly .