Inflation is a general increase in prices and may be measured by the Consumer Price Index $($CPI$).$ Use Appendix A to answer the questions.

In Year $1$ the CPI was $100$; $30$ years later, it was $227.$ What was the annual rate of inflation? Round your answer to the nearest whole number.

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Nancy and Pam both currently earn $$100,000.$ If the annual rate of inflation is $5$ percent, how much must each earn after twelve years to maintain their purchasing power? Round your answer to the nearest dollar.

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Your parents bought a home for $$40,000$ in Year $1$ and sold it in Year $26$ for $$280,000.$ What was the annual rate of price increase over the $25$ years? Round your answer to the nearest whole number.

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