Step 1: In 2010, a compact disc costs $14. If the price of CDs continues to increase at an annual compound rate of 4 percent, how much will a disc cost in 10 years? 25 years? 50 years?

Step 2: The Power Corporation had the following common shares outstanding during the fiscal year: 100,000 during the first quarter of the fiscal year and 300,000 during the balance of the fiscal year. What was the weighted-average number of common shares outstanding during the fiscal year?