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iiamdance

  • one year ago

Write a recursive formula for the sequence 7, 4, 1, –2, –5, .... Then find the next term. (1 point) an = an–1 – 3, where a1 = –8; 7 an = an–1 – 3, where a1 = 7; –8 an = an–1 + 3, where a1 = –3; 22 an = an–1 + 3, where a1 = 7; –8

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  1. amistre64
    • one year ago
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    whats the first term of the sequence?

  2. iiamdance
    • one year ago
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    @amistre64 7

  3. amistre64
    • one year ago
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    then that narrows it down to two options right? what more can we gather from it?

  4. amistre64
    • one year ago
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    are the terms in the sequence getting bigger or smaller?

  5. iiamdance
    • one year ago
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    Smaller

  6. amistre64
    • one year ago
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    then that should help us pinpoint a solution: we need it to start at 7 and have a next value smaller than -5

  7. amistre64
    • one year ago
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    lol, you edited that -3 to a -8 didnt you

  8. iiamdance
    • one year ago
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    huh ?

  9. amistre64
    • one year ago
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    im sure option B gave us 7;-3 when i first read it. but in any case we are still starting at 7, and getting progressively smaller each time ... meaning we are subtracting from the previous term

  10. iiamdance
    • one year ago
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    so 7 - 4 , 4 - 1 , etc ?

  11. amistre64
    • one year ago
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    lets start at 7 7 the next terms is 7 - 3 right? 4 the next term is 4 - 3 right? 1 the next term is 1 - 3 right? -2 etc ....

  12. iiamdance
    • one year ago
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    So The Answer Is B

  13. amistre64
    • one year ago
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    these old eyes of mine can be tricky, but it does appear the B matches the setup correctly

  14. iiamdance
    • one year ago
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    Aw Its Ok ! :) Thank You For Walking Me Through It !

  15. amistre64
    • one year ago
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    good luck ;)

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