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Nataly [62]
3 years ago
6

Determine if y=(1/5)^x is growth or decay

Mathematics
1 answer:
Nat2105 [25]3 years ago
7 0

The function f(x)=\left(\frac{1}{5}\right)^{x} is decaying.

<u>Step-by-step explanation:</u>

Given:

       f(x)=\left(\frac{1}{5}\right)^{x}

The above equation can also write as below,

    f(x)=\frac{1}{5^{x}}

Now from the function we can see that as we are increasing the value of x the value of function is decreasing.  Let take some values of x and then find out the value of function at those value of x

When x = 1 ,

         f(1)=\frac{1}{5}=0.2

When x = 2,

      f(2)=\frac{1}{5^{2}}=\frac{1}{25}=0.04

When x = 3,

      f(3)=\frac{1}{5^{3}}=0.008

So, from the above examples, we can see that the value of function is decreasing on increasing the value of x. Hence the function is decay

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solution;

let,the number be x,

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