O P6-16 (similar to) Question Help (Annuity interest rate Your foes just called and would like some advice from you. An insurance agent just called them and offered them the opportunity to purchase an annuity for $13,200 pay them 52.500 per year for 10 years. They don't have the slightest idea what retum they would be making on their investment of $13,362.06. Whatrate ofretum would they becaming? The annual rate of rohum your toes would be coming on their investment is OK (Round to two decimal places)