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anonymous

  • one year ago

A wooded area in a state park has a mixture of different types of trees. There are 800 pine trees and 50 oak trees. The number of pine trees is decreasing at a rate of 5% per year. The number of oak trees is increasing at a rate of 15% per year. If these trends continue: Write two functions to model this situation, and graph those two functions on the same coordinate grid. During what year in the future will the park have approximately the same number of pine and oak trees?

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  1. anonymous
    • one year ago
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    @musicmaster @rockstar0765 @darkb0nebeauty @TheGaMer007 @nuccioreggie can yall answer A and b FOR ME PLEASE , ILL GIVE BEST ANSWER, FRIEND. AND TESTIMONIAL @sleepyjess @sammixboo @dan815

  2. anonymous
    • one year ago
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    @radar @tywower

  3. anonymous
    • one year ago
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    @peachpi

  4. welshfella
    • one year ago
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    the formula for number of pines after n years is N = 800( 1- 0.050)^n

  5. welshfella
    • one year ago
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    can you work out what it would be for the oaks?

  6. anonymous
    • one year ago
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    ummm idk, ill tyr

  7. anonymous
    • one year ago
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    try

  8. welshfella
    • one year ago
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    14% = 0.14

  9. anonymous
    • one year ago
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    wats that for? ( the .14)?

  10. welshfella
    • one year ago
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    look at the function for the pines the 0.05 come from the 5% this time its 0.14 but the number of trees are increasing so its + 0.14

  11. welshfella
    • one year ago
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    * OH sorry its 0.15 ( 15%)

  12. anonymous
    • one year ago
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    N = 800( 1- 0.15)^n right?

  13. welshfella
    • one year ago
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    no - the number is INCREASING not decreasing

  14. anonymous
    • one year ago
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    N = 800( 1+0.15)^n

  15. welshfella
    • one year ago
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    lol I'll do that again N = 800(0.95)^n and N = 800(1.14)^n

  16. welshfella
    • one year ago
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    - these are the same as the others but more concise

  17. anonymous
    • one year ago
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    are those the 2 functions to the first question?

  18. welshfella
    • one year ago
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    yes

  19. anonymous
    • one year ago
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    ohh lol ok, thankyou. wb the second question

  20. welshfella
    • one year ago
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    how do you think you answer the second part - when number of pines = number of oaks?

  21. welshfella
    • one year ago
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    when that happens the value N will be the same for oaks and pines

  22. anonymous
    • one year ago
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    is it the 14th year?

  23. anonymous
    • one year ago
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    o nevermind sorry

  24. welshfella
    • one year ago
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    how did you get that?

  25. welshfella
    • one year ago
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    thats 0.15 not 0.14 my last post - i seem to have a fixation with 14!!!

  26. anonymous
    • one year ago
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    lol ok, thankyou!

  27. welshfella
    • one year ago
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    i've made another error for the oak trees the number is 50 not 800 so that the second function is 50(1.15)^n sorry

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