7. Suppose that Hope, now retired, worked for 10 years in a retail shop, earning $18,000 per year, and for 27 years in an office, earning $25,000 per year. In today's dollars, Hope's retail job paid $25,000 per year, and her office job paid $45,000 per year. What is Hope's Average Indexed Monthly Earnings? a. $32,643 b. $37,829 c. $40,429 d. $44,316