Practice Exponential Growth And Decay (1) - Exponential Growth and Decay

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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Calculate the population of a town with an initial size of 1,000 growing at 4% per year after 10 years.
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Use the formula \$ y = a(1 + r)^t \$.
Question 2.
If a tree is 2 meters tall and grows at 5% each year, how tall will it be in 6 years?
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Remember to use the growth formula.
3Question 3.
What is the formula for exponential growth?
- \$ y = a(1 + r)^t \$
- \$ y = a(1 - r)^t \$
- \$ y = a b^x \$
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Focus on the sign before r.
4Question 4.
True or False: Exponential decay occurs when $b > 1$ .
- True
- False
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Think about how quantity changes affect the value.
Question 5.
A population of deer is 1,000 and grows at a rate of 10% per year. How many will there be in 15 years?
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Calculate the compound interest for 15 years.
Question 6.
A diamond ring depreciates by 4% annually and is worth $5,000 now. What's its worth in 10 years?
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Don't forget to convert the percentage to a decimal.

5 more questions in this section. Enroll free to practise them all.