Question

Use the function below to find F(4)

F(x) = 5 (1/3)^x

Answer 1

If f(x)=5(1/3)^x and x=4 then:

f(4)=5(1/3)^4

f(4)=5/(3^4)

f(4)=5/81

Answer 2

`f(4)=(5)/(81)`

Explanation:

`f(x)= 5((1)/(3) )^x`

We need to find f(4) using the given function f(x)

f(4) means x is 4

To find f(4) replace x with 4

`f(x)= 5((1)/(3) )^x`

`f(4)= 5((1)/(3) )^4`

`f(4)= 5((1)/(3^4))`

`f(4)= 5((1)/(81))`

`f(4)=(5)/(81)`