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anonymous

  • one year ago

Please help me!! (I WILL MEDAL/FAN) For f(x) = 0.01(2)^x, find the average rate of change from x = 3 to x = 8.

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  1. Vocaloid
    • one year ago
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    average rate of change from x = 8 to x = 3 can be expressed with the formula averate rate of change = [f(8)-f(3)]/(8-3)

  2. anonymous
    • one year ago
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    f(8)-f(3)/5 ??? @Vocaloid sorry was talking to my mum

  3. Vocaloid
    • one year ago
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    almost done, now we need to find f(8)-f(5) what is f(8)?

  4. anonymous
    • one year ago
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    umm..... 8??*_* (Confused)

  5. Vocaloid
    • one year ago
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    f(x) = 0.01(2)^x, right? f(8) = ?

  6. Vocaloid
    • one year ago
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    f(8) means find f(x) when x = 8

  7. anonymous
    • one year ago
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    f(8)=.01(2)^8

  8. Vocaloid
    • one year ago
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    right, can you type that out onto a calculator please and tell me what you get?

  9. anonymous
    • one year ago
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    2.56

  10. Vocaloid
    • one year ago
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    right! now, can you find f(3) using the same pattern?

  11. anonymous
    • one year ago
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    .08

  12. Vocaloid
    • one year ago
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    right! f(8) = 2.56 f(3) = 0.08 so what is f(8)-f(3)?

  13. anonymous
    • one year ago
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    2.48

  14. Vocaloid
    • one year ago
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    right! final step: [f(8)-f(3)]/5 = ?

  15. anonymous
    • one year ago
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    .496

  16. Vocaloid
    • one year ago
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    yup, we're done!

  17. anonymous
    • one year ago
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    thanks youuuu!!! :)

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