Rodrigo has just finished paying back his $8575 unsubsidized Stafford loan, which he took out to fund his 4-year degree. The loan had a duration of ten years and an interest rate of 7.1%, compounded monthly. Rodrigo will allow interest capitalization. If Rodrigo made monthly payments to pay off his loan, how much interest did he pay in total?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?