1. Compute the specified quantity. At auction, 9-month T-bills were sold at a discount of 7.425%. What was the simple annual yield r? HINT [See Example 5.] (Round your answer to three decimal places.) r = %

2. Compute the specified quantity. At auction, 4-month T-bills were sold at a discount of 5.520%. What was the simple annual yield r? HINT [See Example 5.] (Round your answer to three decimal places.) r = %

8. The following chart shows the monthly figures for Apple Computer, Inc. stock in 2010.