document.write( "Question 714024: Hi!
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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
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document.write( "a) Solve for the growth rate.
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document.write( "b) Solve for the initial population.
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document.write( "c) Develop a mathematical model.
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document.write( "d) use the model to predict the population of flies by tomorrow\r
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document.write( "Thank you . I wish i can get the answer \n" );
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Algebra.Com's Answer #438895 by stanbon(75887)![]() ![]() ![]() 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. \n" ); document.write( "=============== \n" ); document.write( " \n" ); document.write( " |