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Warm-Up

Warm-Up. Write the parent function and sketch a graph of each model below. Linear Model Exponential Growth Model Exponential Decay Model. Homework Review. 19. Growth; 5/4; 25% 20. Decay; 0.4; 60% 21. Decay; 2/5; 60% 22. Growth; 1.01; 1% 27. N=64( ½ ) t 28. 8 teams; 4 teams

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Warm-Up

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  1. Warm-Up • Write the parent function and sketch a graph of each model below. • Linear Model • Exponential Growth Model • Exponential Decay Model

  2. Homework Review • 19. Growth; 5/4; 25% • 20. Decay; 0.4; 60% • 21. Decay; 2/5; 60% • 22. Growth; 1.01; 1% • 27. N=64( ½ )t • 28. 8 teams; 4 teams • 29. Yes, there are only 6 rounds • 30. 320, 314, 307, 301, 295, 289 • P. 488 #10-22all, 27-30all • 10. $12,283 • 11. $5450 • 12. $3937 • 13. $2845 • 14. C • 15. B • 16. A • 17. Growth; 1.18; 18% • 18. Decay; 0.98, 2%

  3. 8.5-8.6 Quiz Review

  4. Which of the graphs represents exponential decay?

  5. Which of the graphs represents a linear line?

  6. Fill in the blank • The equation is _______________ • A. Growth • B. Decay • C. Growing at a rate of 15% • D. Decaying at a rate of 15% • E. ugly

  7. Fill in the blank • The equation has _____________ • A. A growth factor of 30% • B. A decay factor of 30% • C. A growth factor of 0.3 • D. A decay factor of 0.7 • E. A decay factor of 7

  8. Fill in the blank • The equation _____________ • A. shows a percent increase of 1.8% • B. shows a percent increase of 18% • C. shows a percent decrease of 18% • D. shows a percent increase of 20% • E. shows a percent increase of 2%

  9. You deposit $1500 in an account that pays 6.5% annual interest compounded yearly. What is the account balance after 5 years? Round your answer to the nearest cent. • A. $1094.82 • B. $18,344.72 • C. $2055.13 • D. $35,595,703.13

  10. How much must you deposit in an account that receives 4.5% interest compounded yearly in order to have $750 after 3 years? • A. $855.87 • B. $2286.47 • C. $657.22 • D. $246.06

  11. A town has a population of 35,000. The population is decreasing by 3.5% each year. At this rate, what will the population be after 9 years? • A. 47,701 • B. 25,399 • C. 725 • D. 2540

  12. Write a model that could be used to find the value of a car that was initially valued at $12,000 and is depreciating at a rate of 15% per year. • A. y = 12,000(1.15)t • B. y = 12,000(0.85)t • C. 12000 = C(1.15)t • D. Not enough information

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