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foz101

canada
Joined: May 22, 2011
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Exponents and logarithims?

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I got a couple questions in which i don't understand the formula, the question is

a popluation of insects doubles every 10 days, there are currently 1500 insects

A) determine the equation of the form p(t)+p0(b)^kt that gives the population of the insects at time, t, in days

b) how many insects will there be in 22 days

c) how many insects were there in 7 days?

I don't know how to use the formula

[Jan 17, 2012 1:24:46 PM]

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Davisheiskell

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Joined: Jan 18, 2012
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Re: Exponents and logarithims?

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You can solve the problem without using the formula kindly follow the step.
1] Find out the number of insect grow in one day.
2] compare with the number of insect given in Que .
3] After finding the Relationship you will easily get the answer of the Que.

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[Edit 1 times, last edit by Davisheiskell at Jan 18, 2012 5:57:42 AM]

[Jan 18, 2012 5:56:20 AM]

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pskinner

Joined: Apr 2, 2005
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Re: Exponents and logarithims?

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p0=1500

you miswrote the equation: p(t)=p0*E^kt

solve for k in 3000=1500*E^10k

replace k with that value and then solve parts (b) and (c) for p(t).
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[Jan 20, 2012 12:45:09 AM]

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DeborahFoy

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Re: Exponents and logarithims?

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This post really helps me. I used to do this trick always whenever I need it.
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[Jan 28, 2012 8:04:10 AM]

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JamesLewis

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Joined: Feb 2, 2012
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Re: Exponents and logarithims?

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Your solutions are very helpful and i will always remember it in my life.
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[Feb 2, 2012 8:22:38 AM]

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joylobo

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Joined: Apr 25, 2012
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Re: Exponents and logarithims?

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This proves to be a great method but there must some other techniques too for the same.
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[Apr 26, 2012 1:18:24 AM]

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pskinner

Joined: Apr 2, 2005
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Re: Exponents and logarithims?

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This proves to be a great method but there must some other techniques too for the same.

Sounds a little like wishful thinking...
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Principal Skinner

[Apr 26, 2012 8:48:48 AM]

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