In 2010, a city population was 55,210 and it was declining at a rate of 1.09 each year. what is the best prediction for when the city population will first be below 48,000?
2019
2022
2025
2028

48000=55210(1-0.0109)^t

Solve for t

t=12.77 =13 years

2010+13=2023

So the answer is c

➷ The multiplier would be (1 - 0.0109)

Just use trial and error to work out the number of years:

55,210 x (1 - 0.0109)^9 = 50024.13

55210 x (1 - 0.0109)^12 = 48406.10

55210 x (1 - 0.0109)^15 = 46840.41

As you can see, the third option would be the first time it is below 48000. Therefore, it would be option C

➶ Hope This Helps You!

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1. 3.4/4

2. 0.8/7

3. 0.5 x 3

4. 0.9 x 6

5. 10.8

6. 2.35

7. 0.567

8. 9.35

9. 0.02

10. 0.06

11. 0.16

12. 0.42

13. 0.63

14. 5.6

15. 8.1

16. 9.9

17. 0.28

18. 0.48

19. 0.27

20. 0.49

21. 0.45

22. 0.72

23. 0.9

24. 0.88

25. 0.75

26. 0.16

27. 0.328

28. 0.495

29. 0.72

30. 1.068

answer:

your answer is: c. 196 7/8 in^3.