The area of a lake is decreasing by

Shantal Samaniego

Shantal Samaniego

Answered question

2022-06-08

The area of a lake is decreasing by 2% each YEAR and can be modeled by A(t) = 11(.98)t11⋅(.98)t

 

 

 

By what factor does the area decrease each MONTH?

 

 

 

Answer & Explanation

RizerMix

RizerMix

Expert2023-05-19Added 656 answers

The given model for the area of the lake is: A(t)=11·(0.98)t, where A(t) represents the area at time t in years.
To find the factor by which the area decreases each month, we need to determine the relationship between months and years. There are 12 months in a year, so we can divide the annual decrease by 12 to find the monthly decrease.
Let's calculate the factor by which the area decreases each month:
A(t)=11·(0.98)t
To express the time in months, we divide t by 12:
A(t12)=11·(0.98)t12
Now, we can rewrite the equation in terms of months:
A(tmonths)=11·(0.98)tmonths12
Comparing this equation to the original equation, we can see that the factor by which the area decreases each month is (0.98)112.
Therefore, the area of the lake decreases each month by a factor of (0.98)112.

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