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Algebra 1

5.7.4 Quantities that Change Exponentially

Algebra 15.7.4 Quantities that Change Exponentially

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Scatter plot showing a steep decline in value (dollars) over time (years) from about $700 at year 1 to near $0 by year 10, indicating rapid decrease followed by stabilization.
1.

This graph represents one of the following descriptions. Which one?

a. A phone loses 4 5 4 5 of its value every year after purchase; the relationship between the number of years since purchasing the phone and the value of the phone.

b. The number of stores a company has tripled approximately every 5 years; the relationship between the number of years and the number of stores.

c. A camera loses 2 5 2 5 of its value every year after purchase; the relationship between the number of years since purchasing the camera and the value of the camera.

2.

Explain how you know the graph represents the description you chose.

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