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anonymous

  • one year ago

Help lol (I have no idea on how to do this) The sequence a(letter n under the a) = 1000(1.03)^n describes the amount of money in an interest-earning account where n is the number of years passed after the account is open opened. A. $11940.5 B. $1125.51 C. $1159.27 D. $1229.87

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  1. nikato
    • one year ago
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    do you have more to the question?

  2. anonymous
    • one year ago
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    sadly no that's all there is to that

  3. anonymous
    • one year ago
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    Do I find n?

  4. nikato
    • one year ago
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    oh. is this not a multiple choice question? does this question just have 4 parts?

  5. anonymous
    • one year ago
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    well it is a multi choice, but this question is very confusing lol

  6. nikato
    • one year ago
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    i dont think you can find any amount unless you are given n, or the year the account is open

  7. anonymous
    • one year ago
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    omg xD soo confusing ok can we do another one?

  8. nikato
    • one year ago
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    yea. i think we dont have enough info to solve. what's your other problem?

  9. anonymous
    • one year ago
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    ok thanks and here ya go: What is the domain of the sequence? 2, 10, 50, 250, 1250 A: 2, 10, 250, 1250 <--- (I think this one but I'm just just used to range and domain on coordinates) B: 2, 3, 4, 5, 6 C: 2, 10, 50, 1250 D: 1, 2, 3, 4, 5

  10. anonymous
    • one year ago
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    oops c is 2, 8, 40, 200, 1000

  11. nikato
    • one year ago
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    no. domain of sequence are counting numbers: 1,2,3,4,5,... all the other choices are range of sequence, or the terms

  12. anonymous
    • one year ago
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    so D?

  13. anonymous
    • one year ago
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    ok, how about another one?

  14. nikato
    • one year ago
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    yup. and sure

  15. anonymous
    • one year ago
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    Write the first five terms of the sentence. \[a _{n} = (-2)^{2}\]

  16. nikato
    • one year ago
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    is your question correct?

  17. anonymous
    • one year ago
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    oops I put 2 not n sorry

  18. nikato
    • one year ago
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    ok. much better. to find first term. plug in 1 into n. to find 2nd, plug in 2 to n to find 3rd, plug in 3 into n. and keep going until 5

  19. anonymous
    • one year ago
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    oh wow easier than I Thought lol thanks! :D one more?

  20. nikato
    • one year ago
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    sure

  21. anonymous
    • one year ago
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    Which recursive rule describes the sequence? 3, 1, 5, -3, 13, ... A: \[a _{1} = 3, a _{n} = -2a_{n-1} +7\] B: \[a _{1} = 3, a _{n} = 7a_{n-1} +2\] C: \[a _{1} = -2, a _{n} = 3a_{n-1} +7\] D: \[a _{1} = -2, a _{n} = 7a_{n-1} +3\]

  22. nikato
    • one year ago
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    well you can eliminate C and D because the first term is 3 so a1=3

  23. nikato
    • one year ago
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    then i recommend plugging into the equation and see which one fits lets try the first one |dw:1433740675835:dw| and look, its the second term in your sequence so this is probably your asnwer

  24. anonymous
    • one year ago
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    oooh I always thought it was more than just plugging in things and thank you!

  25. nikato
    • one year ago
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    no problem. sometimes with multiple choice, its faster by just plugging in

  26. anonymous
    • one year ago
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    soo true, can't believe it's this easy! lol

  27. nikato
    • one year ago
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    yup. most of your questions was just plugging in stuff. good luck on it!

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