anonymous
  • anonymous
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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
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anonymous
  • anonymous
@radar @tywower
anonymous
  • anonymous
@peachpi

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More answers

welshfella
  • welshfella
the formula for number of pines after n years is N = 800( 1- 0.050)^n
welshfella
  • welshfella
can you work out what it would be for the oaks?
anonymous
  • anonymous
ummm idk, ill tyr
anonymous
  • anonymous
try
welshfella
  • welshfella
14% = 0.14
anonymous
  • anonymous
wats that for? ( the .14)?
welshfella
  • welshfella
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
welshfella
  • welshfella
* OH sorry its 0.15 ( 15%)
anonymous
  • anonymous
N = 800( 1- 0.15)^n right?
welshfella
  • welshfella
no - the number is INCREASING not decreasing
anonymous
  • anonymous
N = 800( 1+0.15)^n
welshfella
  • welshfella
lol I'll do that again N = 800(0.95)^n and N = 800(1.14)^n
welshfella
  • welshfella
- these are the same as the others but more concise
anonymous
  • anonymous
are those the 2 functions to the first question?
welshfella
  • welshfella
yes
anonymous
  • anonymous
ohh lol ok, thankyou. wb the second question
welshfella
  • welshfella
how do you think you answer the second part - when number of pines = number of oaks?
welshfella
  • welshfella
when that happens the value N will be the same for oaks and pines
anonymous
  • anonymous
is it the 14th year?
anonymous
  • anonymous
o nevermind sorry
welshfella
  • welshfella
how did you get that?
welshfella
  • welshfella
thats 0.15 not 0.14 my last post - i seem to have a fixation with 14!!!
anonymous
  • anonymous
lol ok, thankyou!
welshfella
  • welshfella
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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