document.write( "Question 714024: Hi!
\n" ); document.write( "Supposed a colony of flies increases according to the law of exponential growth there where 540 flies ( 3 days ago) and 720 flies one day ago.\r
\n" ); document.write( "\n" ); document.write( "a) Solve for the growth rate.
\n" ); document.write( "b) Solve for the initial population.
\n" ); document.write( "c) Develop a mathematical model.
\n" ); document.write( "d) use the model to predict the population of flies by tomorrow\r
\n" ); document.write( "\n" ); document.write( "Thank you . I wish i can get the answer
\n" ); document.write( "

Algebra.Com's Answer #438895 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Supposed a colony of flies increases according to the law of exponential growth there where 540 flies ( 3 days ago) and 720 flies one day ago.
\n" ); document.write( "a) Solve for the growth rate.
\n" ); document.write( "n(t) = ab^t
\n" ); document.write( "----
\n" ); document.write( "540 = ab^-3
\n" ); document.write( "720 = ab^-1
\n" ); document.write( "------
\n" ); document.write( "Divide to solve for \"b\":
\n" ); document.write( "4/3 = b^2
\n" ); document.write( "b = 2/sqrt(3)
\n" ); document.write( "----
\n" ); document.write( "Solve for \"a\":
\n" ); document.write( "720 = a(sqrt(3)/2]
\n" ); document.write( "a = 1440/sqrt(3)
\n" ); document.write( "------
\n" ); document.write( "Equation:
\n" ); document.write( "n(t) = [1440/sqrt(3)][2/sqrt(3)^t\r
\n" ); document.write( "\n" ); document.write( "b) Solve for the initial population.
\n" ); document.write( "n(0) = 1440/sqrt(3) = 831 when rounded down.
\n" ); document.write( "---------------------------------------------
\n" ); document.write( "c) Develop a mathematical model.
\n" ); document.write( "don above
\n" ); document.write( "--------
\n" ); document.write( "d) use the model to predict the population of flies by tomorrow
\n" ); document.write( "n(1) = [1440/sqrt(3)][2/sqrt(3)] = 2880/3 = 960
\n" ); document.write( "=======================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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