Question

If `f(x) = 1/9(3)^x`, what is `f(5)`?

Answer 1

`=>f(5) = 27`

Explanation:

`f(x) = 1/9(3)^x`

Simply substitute `5` wherever there is an `x`:

`f(color(blue)5) = 1/9(3)^color(blue)5`

`f(5) = 1/9(243)`

`f(5) = 27`

Answer 2

`f(5) = 27`

Explanation:

`f(x) = 1/9(3)^x`

When it says `f(5)`, that means we plug in `5` for all `x` values:
`f(5) = 1/9(3)^color(blue)5`

Now do `3^5 = 243`

`f(5) = 1/9(243)`

Simplify:
`quadquadquadquad=243/9`

`quadquadquadquad=27`

Hope this helps!