7.1.1 Exponential Functions, Growth, and Decay − Practice
2. The value of a camcorder bought new for $2000 decreases 20% each year. Write a function representing the value of the camcorder. Does the function represent growth or decay?
1. Robin purchased a piece of land in the year 2000 for $15,000. The value of the land increases at the rate of 13.17% each year. Write a function representing the value of the land. Does the function represent growth, or decay?
4. The value of a $225,000 house increases at a rate of 3.5% each year. Use a graph to predict the value of the house in 8 years.
3. The value of a car bought new for $28900 decreases 15% each year. Write a function representing the value of the car. Does the function represent growth or decay?
6. In 1999 the population of a small town was 6,732. The population decreases at a rate of 1.16% each year. Use a graph to predict what the size of the population will be in 2020.
5. The value of a painting bought for $3,800 increases 2.6% each year. Use a graph to predict the value of the painting in 5 years.
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