Please help with this question

label Algebra
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Suppose the population of trout in a certain stretch of a river is 4000. In about how many years will the population of trout be 700 if the decay rate is 35%? Use the equation 700 = (4000)(0.65)x and round the value of x to the nearest year.

May 16th, 2015


700/4000=0.65^x

0.175=0.65^x

xlog 0.65=log0.175

x=log0.175/log0.65

x=4 years

May 16th, 2015

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