A broker wants to sell a customer an investment costing $100 with an expected payoff in one year of $108.8. The customer indicates that a 8.8 percent return is not very attractive. The broker responds by suggesting the customer borrow $90 for one year at 6.8 percent interest to help pay for the investment. a. What is the customer's expected return If she borrows the money? (Round your answer to 1 decimal place.)