Analyzing Graphs

The value of some cell phones changes exponentially after the initial release. Here are graphs showing the depreciation of Phone A and Phone B one, two, and three years after they were released. Which phone was more expensive when it was first released?

• Phone A

• Phone B

How does the value of each phone change with every passing year?

• Exponential growth

• Exponential decay

Which phone loses its value faster?

• Phone A

• Phone B

The value of a company’s stock doubles approximately every 4 years.

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The value of a company’s stock triples approximately every 8 years.

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