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MTEL Mathematics (Elementary): Properties of Exponential Functions Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. Becky deposits $12,000 into an account with an interest rate of 7% that is compounded monthly. Rounding to the nearest dollar, what is the balance after 7 years?

Question 2 2. Which of the graphs shows exponential decay?

Question 3 3. A value that a function will get infinitely close to, but never reach is called which one of the following?

Question 4 4. If f(x) = abx, f(2) = 480 and f(5) = 30,720, then a = _____.

Question 5 5. Every year a laptop is worth 1/3 of what it was worth for each year previous. If you have a $600 laptop, how much is it worth after 15 years?

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Question 6 6. Sam deposits $5,000 into an account with an interest rate of 3% that is compounded monthly. Rounding to the nearest dollar, what is the balance after 10 years?

Question 7 7. Which of the following equations represents an exponential decay?

Question 8 8. In the compound interest formula, what does the n stand for?

Question 9 9. In an exponential function, the exponent is which one of the following?

Question 10 10. Which of the following is the correct formula for compound interest?

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Question 11 11. Tom deposits $2,000 into an account with an interest rate of 2.5% that is compounded quarterly. Rounding to the nearest dollar, what is the balance in Tom's account after 5 years?

Question 12 12. Which of these situations would represent exponential decay?

Question 13 13. A colony of bacteria starts with 9 bacteria at noon. If the number of bacteria triples every 20 minutes, how many bacteria will be present at 2:40 pm that afternoon?

Question 14 14. Which pattern of numbers is exponential?

Question 15 15. Look at the formula below. Which of the following statements is FALSE?

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Question 16 16. Which of the following statements is FALSE about exponential decay?

Question 17 17. Which of the following is NOT an example of exponential decay?

Question 18 18. Which of these equations correctly represents the following scenario: In her prime, 40 million people knew who Britney Spears was, but that number has been decreasing by 10% each year. So, since 90% of people still recognize her each year, how many people still know who Britney is each year?

Question 19 19. Which of the following is an exponential function?

Question 20 20. Which equation represents a pattern that starts at 6 and is multiplied by 4 each step?

MTEL Mathematics (Elementary): Properties of Exponential Functions Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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