anonymous
  • anonymous
The population P in 1997 for a state is given along with r, it's annual percentage of continuous growth. P=33 millions, r=1.7% (a) Write the formula f(x) =P erx, where r is in decimal notation, that model the population in millions x years after 1997 (b)Estimate the population in 2015
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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amistre64
  • amistre64
r = .017
amistre64
  • amistre64
33,000,000 e^(.017*1000000(x))
anonymous
  • anonymous
........

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anonymous
  • anonymous
33? Wth?
anonymous
  • anonymous
Newton?
anonymous
  • anonymous
33 million is written out there.
anonymous
  • anonymous
that doesnt make sense
anonymous
  • anonymous
The formula says Perx which is usually just an abbreviation for f(x)=Pe^(rx)
amistre64
  • amistre64
its your question, not mine ;) im just the messenger....of doom!!
amistre64
  • amistre64
do we have to use millions of years to find 2015?
anonymous
  • anonymous
Dude, I have no clue, lol. That doesn;t make sense.
amistre64
  • amistre64
why dont it make sense?
amistre64
  • amistre64
large numbers are allowed to exist ;)
amistre64
  • amistre64
or maybe it means: Write the formula f(x) =P erx, where r is in decimal notation, that model the population (in millions); x years after 1997
amistre64
  • amistre64
33,000,000 e^(.017x)
amistre64
  • amistre64
33 e^(.017x) seems more reasonable then.... if I parse the question correctly
amistre64
  • amistre64
x = 18...(2015) 33 * (e^(.017 * 18)) = 44.8134161 million
anonymous
  • anonymous
it wasn;t right....... :(
amistre64
  • amistre64
which one, the 33 e^(.017x) ? cause that seems to be the most logical one
anonymous
  • anonymous
correct answer was...........
anonymous
  • anonymous
33e^0.017x
anonymous
  • anonymous
33 million wasn't correct either ARGHH!
amistre64
  • amistre64
:) whats the correct answer then
anonymous
  • anonymous
44.8
anonymous
  • anonymous
Ready for same problem, new numbers?
amistre64
  • amistre64
I got that for b already
anonymous
  • anonymous
you said 33 mil
amistre64
  • amistre64
no, I said 33 million was how you set the problem up; not the answer; you gave a 2 parter. :)
anonymous
  • anonymous
:(
amistre64
  • amistre64
part 1: set up an equation to use with this info: 33 e^(.017x) part 2) use it to find the population in 18 years
amistre64
  • amistre64
33 million was part of the setup; in part 1.
anonymous
  • anonymous
The population P in 1991 for a state is given along with r, it's annual percentage of continuous growth. P=34 millions, r=2.3% (a) Write the formula f(x) =P erx, where r is in decimal notation, that model the population in millions x years after 1991 (b)Estimate the population in 2016
amistre64
  • amistre64
PART A :) 34 e^(.023x) PART B ;) 2016-1991 = 25 34 * (e^(.023 * 25)) = 60.4224379
anonymous
  • anonymous
that wasn't it! nooooooooooo
anonymous
  • anonymous
I'm shocked!
amistre64
  • amistre64
that should be it unless google lied to me in the math..
anonymous
  • anonymous
That formula should be correct?
amistre64
  • amistre64
60.4224379.... is the same answer I get on the calculator
amistre64
  • amistre64
I used the formula they gave you and the numbers.... there isnt really a way to mess that up :) even for me...
amistre64
  • amistre64
60.4 maybe is what they want
anonymous
  • anonymous
I was trying the formula first the .......34 e^(.023x)
anonymous
  • anonymous
for A
amistre64
  • amistre64
i dont know how they want it formated; thats a computer program issue, but the formula itself is good
anonymous
  • anonymous
aw nuts.
anonymous
  • anonymous
it was 0.023
amistre64
  • amistre64
....those bastards!.... they killed kenny
anonymous
  • anonymous
second part was right! ;)

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