anonymous
  • anonymous
At the end of the first day, 7 weeds appear in your neighborhood park. Each day, the number of weeds increases by four times. How many weeds will be in the park at the end of 14 days?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
7 weeds x 4 x 14 days
lilg132
  • lilg132
7 + (14 - 1) * 4
lilg132
  • lilg132
59 weeds in the park at the end of 14 days

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More answers

anonymous
  • anonymous
it cant be, the answer choices are 71 626,349,395 392 35,456,231
anonymous
  • anonymous
392 is the answer
anonymous
  • anonymous
because 7 x 4 x 14 = 392
lilg132
  • lilg132
oh wait we need to work out the sum
anonymous
  • anonymous
yeah, but im feeling there is a formula to it or something, my teacher wouldnt make it that easy
anonymous
  • anonymous
14( 7 x 4 )
lilg132
  • lilg132
answer is 626349395
lilg132
  • lilg132
i'm not sure of the formula but what i do know is we have 7 weeds on the first day and it multiplies by 4 each day and you do it 14 times and add all the figures up giving you 626349395
anonymous
  • anonymous
alright, that does make sense, thank you !
lilg132
  • lilg132
your welcome i will try and look for the formula for you
anonymous
  • anonymous
thank you (:
mathmate
  • mathmate
Use the compound interest formula: 7(4^14-1)/(4-1)=626349395 which is equivalent to 7(1+4+4^2+...4^13)
lilg132
  • lilg132
thats what i was looking for :)

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